test: fixup test failures on linux (#49068)

* test: fixup spec runner to properly fail on linux when tests fail

* test: fixup dbus tests

* test: disable context menu spellcheck tests on linux

https://github.com/electron/electron/pull/48657 broke those tests
(cherry picked from commit cc3c999148)

* test:rebuild native modules

(cherry picked from commit bb8e2a924b)

* fix: wait for devtools blur event in focus test to avoid race condition

(cherry picked from commit 6fd2575cbc)

* fix: wait for devtools blur event in focus test to avoid race condition

(cherry picked from commit ea830139af)

---------

Co-authored-by: Alice Zhao <alicelovescake@anthropic.com>

script/spec-runner.js

@@ -375,7 +375,7 @@ async function runTestUsingElectron (specDir, testName, shouldRerun, additionalA
     if (shouldRerun) {
       await rerunFailedTests(specDir, testName);
     } else {
-      return false;
+      process.exit(1);
     }
   }
   console.log(`${pass} Electron ${testName} process tests passed.`);
@@ -430,6 +430,19 @@ async function installSpecModules (dir) {
     console.log(`${fail} Failed to yarn install in '${dir}'`);
     process.exit(1);
   }
+
+  if (process.platform === 'linux') {
+    const { status: rebuildStatus } = childProcess.spawnSync('npm', ['rebuild', 'abstract-socket'], {
+      env,
+      cwd: dir,
+      stdio: 'inherit',
+      shell: process.platform === 'win32'
+    });
+    if (rebuildStatus !== 0) {
+      console.log(`${fail} Failed to rebuild abstract-socket native module`);
+      process.exit(1);
+    }
+  }
 }
 
 function getSpecHash () {