Revert workaround for black bar in terminal

Fixes #51749
See #51094

package.json

@@ -49,7 +49,7 @@
     "vscode-nsfw": "1.0.17",
     "vscode-ripgrep": "^1.0.1",
     "vscode-textmate": "^3.3.3",
-    "vscode-xterm": "3.5.0-beta10",
+    "vscode-xterm": "3.5.0-beta12",
     "yauzl": "^2.9.1"
   },
   "devDependencies": {

yarn.lock

@@ -6253,9 +6253,9 @@ vscode-textmate@^3.3.3:
     fast-plist "^0.1.2"
     oniguruma "^6.0.1"
 
-vscode-xterm@3.5.0-beta10:
-  version "3.5.0-beta10"
-  resolved "https://registry.yarnpkg.com/vscode-xterm/-/vscode-xterm-3.5.0-beta10.tgz#f70dd17b77f0ad20b4cc799598d66267e91ec974"
+vscode-xterm@3.5.0-beta12:
+  version "3.5.0-beta12"
+  resolved "https://registry.yarnpkg.com/vscode-xterm/-/vscode-xterm-3.5.0-beta12.tgz#853b9bd42ac7bee2ef3deac08d9199e4b7d5dcdb"
 
 vso-node-api@^6.1.2-preview:
   version "6.1.2-preview"