theme: Fix incorrect version control keys in One themes (#26606)

While the `.{variants}` of the theme keys _were_ incorrect, they are
actually more consistent with our current theme keys (thanks AI!) So we
will keep theme, and fix the incorrect usages in the one themes and
elsewhere.

Old description:
> 
> This PR fixes an issue where we specified the incorrect theme keys
(thanks AI!) > in the theme schema. The following keys have been changed
to their correct > versions:
> 
> | Before                        | After                   |
> |-------------------------------|-------------------------|
> | version_control.added         | version_control_added   |
> | version_control.deleted       | version_control_deleted |
> | version_control.modified      | version_control_modified|
> | version_control.renamed       | version_control_renamed |
> | version_control.conflict      | version_control_conflict|
> | version_control.ignored       | version_control_ignored |
> 
> Please use the after versions in your themes, as they are correct! 
> 
> We won't be adding secondary keys to fix this automatically as git
only > officially launched today.
> 
> Due to this change, we've also updated the version control keys in the
One > themes to keep the default diff hunks looks from changing.

Closes #26572

Release Notes:

- theme: Fixed an issue where version control colors weren't applying
correctly.

assets/themes/one/one.json

@@ -96,9 +96,9 @@
         "terminal.ansi.bright_white": "#dce0e5ff",
         "terminal.ansi.dim_white": "#575d65ff",
         "link_text.hover": "#74ade8ff",
-        "version_control_added": "#a7c088ff",
-        "version_control_modified": "#dec184ff",
-        "version_control_deleted": "#d07277ff",
+        "version_control.added": "#27a657ff",
+        "version_control.modified": "#d3b020ff",
+        "version_control.deleted": "#e06c76ff",
         "conflict": "#dec184ff",
         "conflict.background": "#dec1841a",
         "conflict.border": "#5d4c2fff",
@@ -475,9 +475,9 @@
         "terminal.ansi.bright_white": "#242529ff",
         "terminal.ansi.dim_white": "#97979aff",
         "link_text.hover": "#5c78e2ff",
-        "version_control_added": "#669f59ff",
-        "version_control_modified": "#a48819ff",
-        "version_control_deleted": "#d36151ff",
+        "version_control.added": "#27a657ff",
+        "version_control.modified": "#d3b020ff",
+        "version_control.deleted": "#e06c76ff",
         "conflict": "#a48819ff",
         "conflict.background": "#faf2e6ff",
         "conflict.border": "#f4e7d1ff",