docs: [no-unnecessary-type-parameters] add FAQ section

[kirkwaiblinger]

PR Checklist

• Addresses an existing open issue: fixes Docs: [no-unnecessary-type-parameters] add FAQ for some tricky cases #9680
• That issue was marked as accepting prs
• Steps in Contributing were taken

Overview

Add FAQ section to rule's doc page.

Tried to mention all/most of the issues linked to #9680 in some capacity.

[typescript-eslint]

Thanks for the PR, @kirkwaiblinger!

typescript-eslint is a 100% community driven project, and we are incredibly grateful that you are contributing to that community.

The core maintainers work on this in their personal time, so please understand that it may not be possible for them to review your work immediately.

Thanks again!

---

🙏 Please, if you or your company is finding typescript-eslint valuable, help us sustain the project by sponsoring it transparently on https://opencollective.com/typescript-eslint.

[netlify]

✅ Deploy Preview for typescript-eslint ready!

Name	Link
🔨 Latest commit	88aa43f
🔍 Latest deploy log	https://app.netlify.com/sites/typescript-eslint/deploys/66ec7917c8f5850008060070
😎 Deploy Preview	https://deploy-preview-9975--typescript-eslint.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.
Lighthouse	1 paths audited Performance: 95 (no change from production) Accessibility: 100 (no change from production) Best Practices: 92 (no change from production) SEO: 90 (no change from production) PWA: 80 (no change from production) View the detailed breakdown and full score reports

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[nx-cloud]

☁️ Nx Cloud Report

CI is running/has finished running commands for commit 88aa43f. As they complete they will appear below. Click to see the status, the terminal output, and the build insights.

📂 See all runs for this CI Pipeline Execution

---

✅ Successfully ran 2 targets

• nx run-many --target=build --exclude website --exclude website-eslint
• nx run-many --target=clean

---

Sent with 💌 from NxCloud.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.71%. Comparing base (a2bca88) to head (88aa43f).
Report is 36 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #9975      +/-   ##
==========================================
+ Coverage   88.69%   88.71%   +0.02%     
==========================================
  Files         425      426       +1     
  Lines       14810    14829      +19     
  Branches     4308     4313       +5     
==========================================
+ Hits        13135    13155      +20     
  Misses       1531     1531              
+ Partials      144      143       -1     

Flag	Coverage Δ
unittest	88.71% <ø> (+0.02%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

see 23 files with indirect coverage changes

[kirkwaiblinger]

I would love if someone has a better example for this. I didn't just copy the example from #9828 since it didn't seem very organic, but I'm not sure this is any better 🤔

[JoshuaKGoldberg]

Yeah I normally just go with log or identity. 🤷

function log<T extends string>(string1: T): void {
  const string2: T = string1;
  console.log(string2);
}

[JoshuaKGoldberg]

LGTM so far! Just waiting on the todo note.

[kirkwaiblinger]

Just waiting on the todo note.

I was thinking to defer that to a followup once the linked conversation is fully resolved. Thoughts?

[JoshuaKGoldberg]

Makes sense to me. Let's do it!