Fix TestExchangeBackupListCmd_empty now that we print log file name (#3494)

This should fix the nightly build.

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#### Test Plan

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- [ ] 💪 Manual
- [ ] ⚡ Unit test
- [x] 💚 E2E

src/cli/backup/exchange_e2e_test.go

@@ -98,7 +98,7 @@ func (suite *NoBackupExchangeE2ESuite) TestExchangeBackupListCmd_empty() {
 	result := suite.recorder.String()
 
 	// as an offhand check: the result should contain the m365 user id
-	assert.Equal(t, "No backups available\n", result)
+	assert.True(t, strings.HasSuffix(result, "No backups available\n"))
 }
 
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