[FIX] Visibility of burger menu on certain width

[yash-rajpal]

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• I have added tests that prove my fix is effective or that my feature works (if applicable)
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Proposed changes (including videos or screenshots)

Burger was not visible on a certain width, specifically between 600 to 780. if width is more than 780px sidebar is shown, if less than 600 then burger icon was shown. But it wasn't shown between 600px to 780 px.
It was because for showing burger icon we were only checking for isMobile which is lenght only less than 600. So i added one more check for condition if length is less than 780 px.

Issue(s)

fixes #20499 #20859

Steps to test or reproduce

Further comments

Earlier

After

[yash-rajpal]

@ggazzo @MartinSchoeler Please review. :)

[yash-rajpal]

@ggazzo @MartinSchoeler Please review. :)

[yash-rajpal]

@dougfabris Please have a look. Thanks :)

[yash-rajpal]

@ggazzo please review.

[ghost]

I really hope the fix will be merged soon. This is indeed a quite annoying UI-problem.

[yash-rajpal]

@ggazzo Please have a look at this :)

[yash-rajpal]

Ohh, I didn't notice the conflicts, will resolve in sometime.
Thanks @dougfabris , Sorry for tagging on a conflicting PR.

[tpat2]

Thank you for working on this.
I'm testing on 3.15.0, this works when I'm on a channel, but doesn't seem to work when I'm on a direct message.

[yash-rajpal]

Hello @tpat2 #22211 will fix the burger menu on Direct messages :)