fix: don't call window reload every time we receive an alert

[alex-mcgovern]

• A partial fix for The dashboard refreshes many times for a single conversation #250
• Removes the window.reload call when we receive a server-sent event for an alert being created
• Removes the window.Notification code — this didn't seem to be doing much anyway
• Makes the invalidation of cached data more granular when we receive an alert — now we only invalidate alerts & messages
• There is still further optimisation to be done, we are repeatedly requesting alerts in a loop, this just fixes the visual impact to the user, which is most important

Before

Screen.Recording.2025-02-05.at.8.28.39.AM.mov

After

Screen.Recording.2025-02-05.at.8.28.01.AM.mov

[stacklok-cloud-staging]

Minder Vulnerability Report ✅

Minder analyzed this PR and found it does not add any new vulnerable dependencies.

Vulnerability scan of 697509e1:

• 🐞 vulnerable packages: 0
• 🛠 fixes available for: 0

[coveralls]

Pull Request Test Coverage Report for Build 13154166930

Details

• 1 of 2 (50.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.5%) to 73.651%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/hooks/useSse.ts	1	2	50.0%

Totals
Change from base Build 13116159467:	-0.5%
Covered Lines:	787
Relevant Lines:	1001

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💛 - Coveralls