Add word_characters to language overrides & use for more things

Use word_characters to feed completion trigger characters as well and
also recognize kebab as a potential sub-word splitter. This is fine for
non-kebab-case languages because we'd only ever attempt to split a word
with a kebab in it in language scopes which are kebab-cased

Co-Authored-By: Max Brunsfeld <max@zed.dev>

crates/live_kit_client/LiveKitBridge/Package.resolved

@@ -42,8 +42,8 @@
         "repositoryURL": "https://github.com/apple/swift-protobuf.git",
         "state": {
           "branch": null,
-          "revision": "0af9125c4eae12a4973fb66574c53a54962a9e1e",
-          "version": "1.21.0"
+          "revision": "ce20dc083ee485524b802669890291c0d8090170",
+          "version": "1.22.1"
         }
       }
     ]