Fix empty alternative in ClickFix clipboard regex

[cnotin]

Fixes #34321.

Remove the duplicate alternation character from the ClickFix clipboard regex. The previous || introduced an empty alternative, causing the regex to match every clipboard string.

All three synchronized copies are updated:

• the global prevent-clipboard-write rule
• the exception for community-scripts.org and massgrave.dev
• the specific sites.google.com rule

Tested that sensor.chambre_humidite no longer matches, while representative cmd and iex( inputs still match.

[cnotin]

This regression was introduced by @stephenhawk8054 in commit 2c848f1 while broadening the iex(irm ...) pattern to also cover iwr: 2c848f1
If you could confirm please

[u-RraaLL]

Thanks. gorhill missed the PR and already fixed it in: dffea52