languages: Fix detents case line after typing `:` in Python (#34017)
Closes #34002
`decrease_indent_patterns` should only contain mapping which are at same
indent level with each other, which is not true for `match` and `case`
mapping.
Caused in https://github.com/zed-industries/zed/pull/33370
Release Notes:
- N/A
38febed02dSmit Barmase committed on 7/7/2025, 5:11:29 PM· committed by GitHubparent8cc3b09