fix: abstract classes appear are listed under new ... autocompletio…

…ns (#7112)

fixes #6971 
## Checklist

- [ ] Title matches [Winglang's style guide](https://www.winglang.io/contributing/start-here/pull_requests#how-are-pull-request-titles-formatted)
- [ ] Description explains motivation and solution
- [ ] Tests added (always)
- [ ] Docs updated (only required for features)
- [ ] Added `pr/e2e-full` label if this feature requires end-to-end testing

*By submitting this pull request, I confirm that my contribution is made under the terms of the [Wing Cloud Contribution License](https://github.com/winglang/wing/blob/main/CONTRIBUTION_LICENSE.md)*.

packages/@winglang/wingc/src/lsp/completions.rs

@@ -1107,6 +1107,11 @@ fn format_symbol_kind_as_completion(name: &str, symbol_kind: &SymbolKind) -> Opt
 		return None;
 	}
 
+	// skipping abstract classes- so they won't appear in completions
+	if is_abstract_class(symbol_kind) {
+		return None;
+	}
+
 	Some(match symbol_kind {
 		SymbolKind::Type(t) => CompletionItem {
 			label: name.to_string(),
@@ -1188,6 +1193,15 @@ fn should_exclude_symbol(symbol: &str) -> bool {
 	symbol == WINGSDK_STD_MODULE || symbol.starts_with(CLOSURE_CLASS_PREFIX) || symbol.starts_with(PARENT_THIS_NAME)
 }
 
+fn is_abstract_class(symbol_kind: &SymbolKind) -> bool {
+	if let Some(t) = symbol_kind.as_type() {
+		if let Some(c) = t.as_class() {
+			return c.is_abstract;
+		}
+	}
+	return false;
+}
+
 fn str_to_access_context(s: &str) -> ObjectAccessContext {
 	match s {
 		"this" => ObjectAccessContext::This,
@@ -2053,6 +2067,17 @@ let x: cloud.Buc
 		assert!(partial_type_reference_annotation.iter().any(|c| c.label == "Bucket"))
 	);
 
+	test_completion_list!(
+		hide_abstract_members,
+		r#"
+	bring ui;
+
+	let x = new ui.
+	            //^
+	"#,
+		assert!(hide_abstract_members.iter().all(|c| c.label != "VisualComponent"))
+	);
+
 	test_completion_list!(
 		no_completion_wrong_builtin,
 		r#"

packages/@winglang/wingc/src/lsp/snapshots/completions/hide_abstract_members.snap

@@ -0,0 +1,81 @@
+---
+source: packages/@winglang/wingc/src/lsp/completions.rs
+---
+- label: Button
+  kind: 7
+  documentation:
+    kind: markdown
+    value: "```wing\nclass Button extends VisualComponent {\n  static isVisualComponent(...): bool;\n}\n```\n---\nA button can be used to perform an action.\n\n*@noinflight*"
+  sortText: gg|Button
+  insertText: Button($1)
+  insertTextFormat: 2
+  command:
+    title: triggerParameterHints
+    command: editor.action.triggerParameterHints
+- label: Field
+  kind: 7
+  documentation:
+    kind: markdown
+    value: "```wing\nclass Field extends VisualComponent {\n  static isVisualComponent(...): bool;\n}\n```\n---\nA field can be used to display a value.\n\n*@noinflight*"
+  sortText: gg|Field
+  insertText: Field($1)
+  insertTextFormat: 2
+  command:
+    title: triggerParameterHints
+    command: editor.action.triggerParameterHints
+- label: FileBrowser
+  kind: 7
+  documentation:
+    kind: markdown
+    value: "```wing\nclass FileBrowser extends VisualComponent {\n  static isVisualComponent(...): bool;\n}\n```\n---\nA file browser can be used to browse files.\n\n*@noinflight*"
+  sortText: gg|FileBrowser
+  insertText: FileBrowser($1)
+  insertTextFormat: 2
+  command:
+    title: triggerParameterHints
+    command: editor.action.triggerParameterHints
+- label: HttpClient
+  kind: 7
+  documentation:
+    kind: markdown
+    value: "```wing\nclass HttpClient extends VisualComponent {\n  static isVisualComponent(...): bool;\n}\n```\n---\nAn HttpClient can be used to make HTTP requests.\n\n*@noinflight*"
+  sortText: gg|HttpClient
+  insertText: HttpClient($1)
+  insertTextFormat: 2
+  command:
+    title: triggerParameterHints
+    command: editor.action.triggerParameterHints
+- label: Section
+  kind: 7
+  documentation:
+    kind: markdown
+    value: "```wing\nclass Section extends VisualComponent {\n  add(...): void;\n  addButton(...): void;\n  addField(...): void;\n  static isVisualComponent(...): bool;\n}\n```\n---\nA section can be used to group other visual components.\n\n*@noinflight*"
+  sortText: gg|Section
+  insertText: Section($1)
+  insertTextFormat: 2
+  command:
+    title: triggerParameterHints
+    command: editor.action.triggerParameterHints
+- label: Table
+  kind: 7
+  documentation:
+    kind: markdown
+    value: "```wing\nclass Table extends VisualComponent {\n  static isVisualComponent(...): bool;\n}\n```\n---\nA table can be used to browse files.\n\n*@noinflight*"
+  sortText: gg|Table
+  insertText: Table($1)
+  insertTextFormat: 2
+  command:
+    title: triggerParameterHints
+    command: editor.action.triggerParameterHints
+- label: ValueField
+  kind: 7
+  documentation:
+    kind: markdown
+    value: "```wing\nclass ValueField extends Field {\n  static isVisualComponent(...): bool;\n}\n```\n---\nA value field can be used to display a string value.\n\n*@noinflight*"
+  sortText: gg|ValueField
+  insertText: ValueField($1)
+  insertTextFormat: 2
+  command:
+    title: triggerParameterHints
+    command: editor.action.triggerParameterHints
+