Merge pull request #50816 from DustinCampbell/update-csharp-grammar

Fix regression in C# TextMate grammar related to lambda parameters

extensions/csharp/syntaxes/csharp.tmLanguage.json

@@ -4,7 +4,7 @@
 		"If you want to provide a fix or improvement, please create a pull request against the original repository.",
 		"Once accepted there, we are happy to receive an update request."
 	],
-	"version": "https://github.com/dotnet/csharp-tmLanguage/commit/925295380addea5b27f419a423c708f421347c5c",
+	"version": "https://github.com/dotnet/csharp-tmLanguage/commit/2904dae001939996c6a3484eac1b95716797ac41",
 	"name": "C#",
 	"scopeName": "source.cs",
 	"patterns": [
@@ -3588,7 +3588,7 @@
 			]
 		},
 		"lambda-parameter": {
-			"match": "(?x)\n(?:\\b(ref|out|in)\\b)?\\s*\n(?<type-name>\n  (?:\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name-and-type-args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type-args>\\s*<(?:[^<>]|\\g<type-args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name-and-type-args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s*\\[(?:\\s*,\\s*)*\\]\\s*)* # array suffix?\n  )\n)?\n(\\g<identifier>)\\b\\s*\n(?=[,)])",
+			"match": "(?x)\n(?:\\b(ref|out|in)\\b)?\\s*\n(?:(?<type-name>\n  (?:\n    (?:\n      (?:(?<identifier>@?[_[:alpha:]][_[:alnum:]]*)\\s*\\:\\:\\s*)? # alias-qualification\n      (?<name-and-type-args> # identifier + type arguments (if any)\n        \\g<identifier>\\s*\n        (?<type-args>\\s*<(?:[^<>]|\\g<type-args>)+>\\s*)?\n      )\n      (?:\\s*\\.\\s*\\g<name-and-type-args>)* | # Are there any more names being dotted into?\n      (?<tuple>\\s*\\((?:[^\\(\\)]|\\g<tuple>)+\\))\n    )\n    (?:\\s*\\?\\s*)? # nullable suffix?\n    (?:\\s*\\[(?:\\s*,\\s*)*\\]\\s*)* # array suffix?\n  )\n)\\s+)?\n(\\g<identifier>)\\b\\s*\n(?=[,)])",
 			"captures": {
 				"1": {
 					"name": "storage.modifier.cs"