fix: set created property for scratch base #1526

Job	Run time
matrix-prep-os	1s
matrix-prep-bazelversion	2s
test (ubuntu-latest, 7.1.1, ., true)	2m 18s
test (ubuntu-latest, 7.1.1, ., false)	2m 23s
test (ubuntu-latest, 7.1.1, e2e/wasm, false)	2m 0s
test (ubuntu-latest, 7.1.1, e2e/smoke, true)	14s
test (ubuntu-latest, 7.1.1, e2e/smoke, false)	14s
test (ubuntu-latest, 7.1.1, e2e/assertion, true)	6m 1s
test (ubuntu-latest, 6.4.0, ., true)	2m 31s
test (ubuntu-latest, 6.4.0, ., false)	2m 32s
test (ubuntu-latest, 6.4.0, e2e/wasm, false)	28s
test (ubuntu-latest, 6.4.0, e2e/smoke, true)	18s
test (ubuntu-latest, 6.4.0, e2e/smoke, false)	10s
test (ubuntu-latest, 6.4.0, e2e/assertion, true)	6m 46s
test (macos-13, 7.1.1, ., true)	8m 59s
test (macos-13, 7.1.1, ., false)	5m 14s
test (macos-13, 7.1.1, e2e/smoke, true)	44s
test (macos-13, 7.1.1, e2e/smoke, false)	44s
	41m 39s

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