Disable completions in attribute arguments #8772

Job	Run time
Format	22s
Clippy	34s
Check web files	31s
Format Q# Files	42s
Build and test (windows-latest)	9m 0s
Integration tests (windows-latest)	10m 31s
Build and test (ubuntu-latest)	5m 40s
Build and test (macos-14)	5m 56s
Integration tests (ubuntu-latest)	6m 3s
Rust Unit tests (windows-latest)	5m 41s
Rust Unit tests (ubuntu-latest)	2m 50s
Integration tests (macos-14)	8m 43s
Rust Unit tests (macos-14)	3m 30s
Status Check	0s
	1h 0m 3s

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