Implement CODEOWNERS corrections

[Repiteo]

• Followup to Update CODEOWNERS #97866

CODEOWNERS has been a bit too overzealous in catching review groups, so this PR mitigates that with two changes:

• Revert adding _editor reviewers to editor folders in modules. Might revisit in the future, but it's more granular than expected.
• Add underscore before wildcard for servers, preventing false positives.

[AThousandShips]

For the meta-teams like @godotengine/_editor we might want to look at diversifying the teams in that, and we might want to remove some of the other meta-teams if they aren't working well

But looks good for that part, holding off approval until the servers part has been resolved

CC @bruvzg since you had some thoughts on the wildcard cases in the previous PR

[dalexeev]

By the way:

1. Add missing . in line 3:

godot/.github/CODEOWNERS

Lines 1 to 3 in b3bcb2d

	# Lines starting with '#' are comments.
	# Each line is a file pattern followed by one or more owners.
	# Owners can be @users, @org/teams or emails

2. Add missing / in line 156:

godot/.github/CODEOWNERS

Lines 155 to 157 in b3bcb2d

	/modules/jsonrpc/ @godotengine/gdscript @godotengine/network
	/modules/jsonrpc/tests @godotengine/gdscript @godotengine/network @godotengine/tests
	/modules/mono/ @godotengine/dotnet

[AThousandShips]

Should work well now I think