Update help baseline with --disableLanguageFeature option

Updated compiler_help_output.bsl to include the new --disableLanguageFeature CLI option in help output.

Addresses comment from @T-Gro about updating help tests.

Co-authored-by: T-Gro <[email protected]>

Author: Copilot

tests/FSharp.Compiler.ComponentTests/CompilerOptions/fsc/misc/compiler_help_output.bsl

@@ -80,6 +80,7 @@ Copyright (c) Microsoft Corporation. All Rights Reserved.
                 - LANGUAGE -
 --langversion:?                          Display the allowed values for language version.
 --langversion:{version|latest|preview}   Specify language version such as 'latest' or 'preview'.
+--disableLanguageFeature:<string>        Disable a specific language feature by name.
 --checked[+|-]                           Generate overflow checks (off by default)
 --define:<string>                        Define conditional compilation symbols (Short form: -d)
 --mlcompatibility                        Ignore ML compatibility warnings