Enable .editorconfig support by default

[ematipico]

No description provided.

[fireairforce]

Is there any more detailed information to add to this issue? Can I directly refer to prettier here?

[ematipico]

.editorconfig is already supported, but at the moment it's an opt-in feature.

The task is to default the value to true, update the tests, and make sure that the existing functionalities work as expected.

[arendjr]

Note we had a bit of discussion around this on Discord: https://discord.com/channels/1132231889290285117/1132614451565170819/1326570605683671141

I think the gist of it is that we should be careful when both a biome.json and an .editorconfig are present. If both exist, formatter settings from the biome.json take precedence. If a biome.json exists without formatter settings , and an .editorconfig file exists in a directory higher up in the hierarchy, then default formatter settings should be used and the .editorconfig file should be ignored.