fix: undo/redo when exiting view mode

[Vatsalsoni13]

Description

This PR addresses the bug: When exiting view mode the undo/redo buttons are disabled even though their stacks aren't empty.

Fix

Fixes #7948.
The default constructor is getting called which has values isUndoStackEmpty equal to true and isRedoStackEmpty equal to true.
Passing the function(from class History) which checks for whether the stacks are empty or not fixes the issue.

Comparison

Before

before.mp4

After

after.mp4

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[Vatsalsoni13]

Hello,
I tried rerunning the test files on my local machine but I don't seem to get the error which is shown above. It would be very helpful if someone could explain what exactly is the testcase testing. I tried searching for documentation related to tests in the repo but couldn't find it.
Thank you.
(I'm new to open-source apologies if it is trivial)
Edit:
Checks have been passed

[dwelle]

I tried rerunning the test files on my local machine but I don't seem to get the error which is shown above. It would be very helpful if someone could explain what exactly is the testcase testing. I tried searching for documentation related to tests in the repo but couldn't find it.

Yeah, we have some flaky tests in the history test suite, we'll need to fix.

Anyway, I added tests for this PR. We're good to go. Thanks!