Fix integration test "FreeText Editor FreeText must check that text change can be undone/redone"

[timvandermeij]

In #17260 we found that this integration test consistently failed, but figured it couldn't really be related to that PR, so I made #17261 to show that this integration test is already broken on master. I have bisected it and found that this regressed in #17243 in which sadly no integration tests were run, so that's probably why this went by unnoticed. If I revert that commit the test works again.

@calixteman Could you perhaps check why this test fails with 334f0eb applied? (I already had a quick look, but it wasn't immediately obvious to me why, and I'm sure you know the details of that patch much better than I do.)

Traceback:

Failures:
1) FreeText Editor FreeText must check that text change can be undone/redone
  Message:
�[31m    ProtocolError: Waiting for selector `#pdfjs_internal_editor_9 .overlay.enabled` failed: Runtime.callFunctionOn timed out. Increase the 'protocolTimeout' setting in launch/connect calls for a higher timeout if needed.�[0m
  Stack:
        at <instance_members_initializer> (file:///C:/pdfjs/botio-files-pdfjs/private/9480a813b92e60b/node_modules/puppeteer-core/lib/esm/puppeteer/common/CallbackRegistry.js:92:14)
        at new Callback (file:///C:/pdfjs/botio-files-pdfjs/private/9480a813b92e60b/node_modules/puppeteer-core/lib/esm/puppeteer/common/CallbackRegistry.js:96:16)
        at CallbackRegistry.create (file:///C:/pdfjs/botio-files-pdfjs/private/9480a813b92e60b/node_modules/puppeteer-core/lib/esm/puppeteer/common/CallbackRegistry.js:29:26)
        at Connection._rawSend (file:///C:/pdfjs/botio-files-pdfjs/private/9480a813b92e60b/node_modules/puppeteer-core/lib/esm/puppeteer/cdp/Connection.js:88:26)
        at CdpCDPSession.send (file:///C:/pdfjs/botio-files-pdfjs/private/9480a813b92e60b/node_modules/puppeteer-core/lib/esm/puppeteer/cdp/CDPSession.js:75:33)
        at #evaluate (file:///C:/pdfjs/botio-files-pdfjs/private/9480a813b92e60b/node_modules/puppeteer-core/lib/esm/puppeteer/cdp/ExecutionContext.js:208:50)
        at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
        at async ExecutionContext.evaluateHandle (file:///C:/pdfjs/botio-files-pdfjs/private/9480a813b92e60b/node_modules/puppeteer-core/lib/esm/puppeteer/cdp/ExecutionContext.js:175:16)
        at async IsolatedWorld.evaluateHandle (file:///C:/pdfjs/botio-files-pdfjs/private/9480a813b92e60b/node_modules/puppeteer-core/lib/esm/puppeteer/cdp/IsolatedWorld.js:120:16)
        at async CdpJSHandle.evaluateHandle (file:///C:/pdfjs/botio-files-pdfjs/private/9480a813b92e60b/node_modules/puppeteer-core/lib/esm/puppeteer/api/JSHandle.js:163:20)

[calixteman]

I thought I ran them... but obviously I forgot, sorry about that.
I'm fixing.

[timvandermeij]

No worries; that can happen. Thank you for fixing this so quickly!