test(e2e): Add retry to search test

[moduli]

Potentially with the implementation of #5173, the e2e test for search was impacted and started to fail on main (in CI only (?). I couldn't repro locally).

 │ === RUN   TestCliSearch
│     search_test.go:40: Stopping daemon...
│     search_test.go:58: Waiting for daemon to start...
│     scope.go:85: Created Org Id: o_Mi5dwTRE8G
│     scope.go:127: Created Project Id: p_swelCH9fAZ
│     search_test.go:109: 
│         	Error Trace:	/src/boundary/testing/internal/e2e/tests/base/search_test.go:109
│         	Error:      	"[]" should have 1 item(s), but has 0
│         	Test:       	TestCliSearch
│ --- FAIL: TestCliSearch (6.15s)

This PR makes some modifications to the e2e test to perform some retries for that assertion.

[johanbrandhorst]

Thanks for looking into this!