🌱 fix(e2e): wait for leader election & measure timing for better monitoring

[camilamacedo86]

TestClusterExtensionAfterOLMUpgrade was failing due to increased leader election timeouts, causing reconciliation checks to run before leadership was acquired.

This fix ensures the test explicitly waits for leader election logs ("successfully acquired lease") before verifying reconciliation.

Additionally, the test now measures and logs the leader election duration to help monitor election timing.

Example: https://github.com/operator-framework/operator-controller/actions/runs/13047935813/job/36401741998

Logs from operator-controller;

I0130 08:12:51.290826       1 main.go:427] "starting manager" logger="setup"
I0130 08:12:51.291050       1 server.go:208] "Starting metrics server" logger="controller-runtime.metrics"
I0130 08:12:51.291109       1 server.go:83] "starting server" name="health probe" addr="[::]:8081"
I0130 08:12:51.291121       1 server.go:247] "Serving metrics server" logger="controller-runtime.metrics" bindAddress=":8443" secure=true
I0130 08:12:51.291209       1 leaderelection.go:257] attempting to acquire leader lease olmv1-system/9c4404e7.operatorframework.io...

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[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 67.50%. Comparing base (c3a4406) to head (4238c2b).

Files with missing lines	Patch %	Lines
catalogd/cmd/catalogd/main.go	0.00%	3 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1676   +/-   ##
=======================================
  Coverage   67.50%   67.50%           
=======================================
  Files          57       57           
  Lines        4632     4632           
=======================================
  Hits         3127     3127           
  Misses       1278     1278           
  Partials      227      227           

Flag	Coverage Δ
e2e	53.40% <100.00%> (ø)
unit	54.29% <0.00%> (ø)

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[camilamacedo86]

@LalatenduMohanty @joelanford @thetechnick