feat(fe): add new diagnostic E0721 #6277

Job	Run time
macOS x86_64	2m 56s
macOS AArch64	1s
Linux x86_64	3m 8s
Linux ARM	1m 42s
Linux AArch64	1m 50s
Windows x86	6m 59s
Windows x64	6m 21s
Windows ARM	1m 38s
Windows ARM64	1m 36s
Chocolatey package	0s
Scoop package	0s
test on ${{ matrix.os.name }}	0s
MSIX installer	0s
npm package	0s
winget manifests	0s
test Chocolatey package	0s
test npm package on ${{ matrix.os.name }} with ${{ matrix.manager.name }}	0s
	26m 11s

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