feat(fe): add warning for 'x==y;' statement #6284

Job	Run time
macOS x86_64	6m 54s
macOS AArch64	1m 7s
Linux x86_64	3m 20s
Linux ARM	1m 45s
Linux AArch64	1m 50s
Windows x86	7m 3s
Windows x64	6m 9s
Windows ARM	1m 46s
Windows ARM64	1m 41s
Scoop package	17s
test on Windows	9s
MSIX installer	1m 2s
Chocolatey package	14s
test on macOS 11	4s
test on macOS 12	8s
test on Arch Linux	12s
test on Debian 11 Bullseye	7s
test on Debian 10 Buster	8s
test on Fedora 35	7s
test on Fedora 36	12s
test on Ubuntu 18.04 LTS Bionic	5s
test on Ubuntu 20.04 LTS Focal	7s
test Chocolatey package	43s
npm package	8s
winget manifests	19s
test npm package on Windows with npm	35s
test npm package on Windows with npm (--global)	30s
test npm package on Windows with Yarn	16s
test npm package on macOS 11 with npm	9s
test npm package on macOS 11 with npm (--global)	7s
test npm package on macOS 11 with Yarn	6s
test npm package on macOS 12 with npm	8s
test npm package on macOS 12 with npm (--global)	9s
test npm package on macOS 12 with Yarn	7s
test npm package on Ubuntu with npm	6s
test npm package on Ubuntu with npm (--global)	6s
test npm package on Ubuntu with Yarn	6s
	38m 2s

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