extensions: remove decorations column display support
Created by: taras-yemets
Closes https://github.com/sourcegraph/sourcegraph/issues/39437
Removes extensions decorations column display support added in https://github.com/sourcegraph/sourcegraph/pull/36007
Released sourcegraph v25.7.0
Test plan
- CI passes
- git blame and extensions decorations work in both blob viewers (monaco and codemirror):
- enable
extensionsAsCoreFeatures
experimental feature and ensure that git blame column view works for both editors - disable
extensionsAsCoreFeatures
and ensure that git blame display has 3 modes (selected lines / whole file / hide) regardless ofenableExtensionsDecorationsColumnView
experimental feature value -
enableExtensionsDecorationsColumnView
field if present in experimental features is highlighted indicating that this field is not allowed
- enable