fix(connection): add jQuery selector for closing offline banner (@AmanWebDev2)

[AmanWebDev2]

Description

This PR fixes issue #6389, which addresses the problem where the "No internet connection" banner would not disappear even after the user reconnects to the internet. The fix adds a proper jQuery selector that correctly targets the offline banner element with the appropriate classes (psa.notice), ensuring it gets closed when connection is restored.

Additionally, this PR also fixes an issue where, after going offline, if the user manually cancels the offline banner and then reconnects, the 'You're back online' toast message would not appear. The fix ensures the toast message is correctly triggered when the connection is restored.

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Closes #6389

RESULT -

Screen.Recording.2025-03-22.at.02.02.23.mov

Screen.Recording.2025-03-23.at.02.12.37.mp4

[Miodec]

Additionally, this PR also fixes an issue where, after going offline, if the user manually cancels the offline banner and then reconnects, the 'You're back online' toast message would not appear. The fix ensures the toast message is correctly triggered when the connection is restored.

This was done to not bother the user with 'back online' banners if they alread closed the offline banner, so im not sure about this change.