Add option to apply all environment-specific compatibility

[slevithan]

Add an option to apply compatibility fixes even if they’re not needed by the current environment. This would be useful when serializing transpiled patterns for later use.

Context

Oniguruma-To-ES 3.1.1 added an environment-specific workaround (#30) to handle a WebKit bug that was reported in Shiki. The workaround is applied only when the environment that Oniguruma-To-ES is running in has the bug. That means if you serialize output in an environment that doesn't include the bug and then construct an affected regex in an environment that does, the regex won't work correctly.

Proposed solution

Add an option to toRegExp/toRegExpDetails called e.g. includeAllEnvFixes that applies all environment-specific workarounds during transpilation, even if they aren't needed in the current environment.

[slevithan]

An additional workaround for WebKit (#38) was added in v4.3.3.

Adding the option described in this issue is currently on the back burner, but will become high-priority if Shiki finishes adding support for precompiled grammars by resolving known issue shikijs/shiki#918.