fix(test): immediately reposition caret and tape on tapeMargin change (@byseif21) (#6860)

### Description

changing `tapeMargin` mid-test didn’t move the caret until typing
resumed because no layout update was triggered for this config.

frontend/__tests__/root/config-metadata.spec.ts

@@ -55,7 +55,13 @@ describe("ConfigMeta", () => {
       .sort();
 
     expect(configsWithTriggeResize).toEqual(
-      ["fontSize", "keymapSize", "maxLineWidth", "tapeMode"].sort()
+      [
+        "fontSize",
+        "keymapSize",
+        "maxLineWidth",
+        "tapeMode",
+        "tapeMargin",
+      ].sort()
     );
   });
   describe("overrideValue", () => {

frontend/src/ts/config-metadata.ts

@@ -512,6 +512,7 @@ export const configMetadata: ConfigMetadataObject = {
   tapeMargin: {
     icon: "fa-tape",
     displayString: "tape margin",
+    triggerResize: true,
     changeRequiresRestart: false,
   },
   smoothLineScroll: {