Boost: Fix ISA showing an error if no report was found #95959

Job	Run time
Determine tests matrix	1m 24s
E2E: Build jetpack-boost	3m 26s
E2E: Build jetpack-core	4m 13s
E2E: Build jetpack-search	4m 7s
E2E: Build jetpack-social	3m 59s
E2E: Build jetpack-videopress	2m 58s
Jetpack connection e2e tests	4m 10s
Jetpack pre-connection e2e tests	2m 33s
Jetpack post-connection e2e tests	5m 43s
Jetpack post editor e2e tests	3m 25s
Jetpack Boost - Base e2e tests	3m 44s
Jetpack Boost - Modules e2e tests	4m 43s
Jetpack Boost - Critical CSS e2e tests	3m 50s
Jetpack Boost - Page Cache e2e tests	3m 15s
Jetpack Boost - Concatenate JS and CSS e2e tests	3m 15s
Jetpack Boost - Image CDN e2e tests	3m 12s
Jetpack Boost - Image Guide e2e tests	2m 35s
Search e2e tests	4m 11s
VideoPress e2e tests	2m 34s
Social e2e tests	4m 52s
Slack notification	50s
Test report	3s
	1h 13m 2s

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