can: rename CanRead::start to not hide

In file included from simulator/global.h:25,
                 from ../firmware/pch/pch.h:20,
                 from ../firmware/hw_layer/drivers/can/can_hw.cpp:15:
../firmware/ChibiOS/os/various/cpp_wrappers/ch.hpp:1335:21: error: ‘chibios_rt::ThreadReference chibios_rt::BaseStaticThread<N>::start(tprio_t) [with int N = 1384; tprio_t = unsigned int]’ was hidden [-Werror=overloaded-virtual=]
 1335 |     ThreadReference start(tprio_t prio) override {
      |                     ^~~~~
../firmware/hw_layer/drivers/can/can_hw.cpp:35:14: note:   by ‘void CanRead::start(CANDriver*)’
   35 |         void start(CANDriver* device) {
      |              ^~~~~

firmware/hw_layer/drivers/can/can_hw.cpp

@@ -32,10 +32,9 @@ class CanRead final : protected ThreadController<UTILITY_THREAD_STACK_SIZE> {
 	{
 	}
 
-	void start(CANDriver* device) {
-		m_device = device;
-
+	void tryStart(CANDriver *device) {
 		if (device) {
+            m_device = device;
 			ThreadController::start();
 		}
 	}
@@ -192,8 +191,8 @@ void initCan() {
 	}
 
 	if (engineConfiguration->canReadEnabled) {
-		canRead1.start(device1);
-		canRead2.start(device2);
+		canRead1.tryStart(device1);
+		canRead2.tryStart(device2);
 	}
 
 	isCanEnabled = true;