Add proper fuzzy search to "Filter Methods" script editor

[Arnklit]

Describe the project you are working on

A game in production

Describe the problem or limitation you are having in your project

The search in the Filter Methods view is not very good, it has some limited fuzzy searching, but it will not find any results with spaces or typos.

Examples:

Describe the feature / enhancement and how it helps to overcome the problem or limitation

Implement full fuzzy search for this field, allowing for typos etc.

Describe how your proposal will work, with code, pseudo-code, mock-ups, and/or diagrams

It appears that Fuzzy search is being added to core in this pull request. godotengine/godot#98278
When that is merged this field should implement those functions.

If this enhancement will not be used often, can it be worked around with a few lines of script?

This would be used often

Is there a reason why this should be core and not an add-on in the asset library?

This is about the default editor behaviour