cleanup & simplify put_append_blob_00 example #3652

Job	Run time
Get minimum supported rust version	21s
test AutoRust	3m 21s
Code Style	4m 34s
SDK Tests (stable, false)	11m 53s
SDK Tests (1.70.0, false)	10m 55s
SDK Tests (nightly, true)	8m 24s
E2E Tests (stable, false)	40s
E2E Tests (1.70.0, false)	46s
E2E Tests (nightly, true)	45s
Integration Tests (stable, false)	6h 0m 16s
Integration Tests (1.70.0, false)	8m 47s
Integration Tests (nightly, true)	9m 24s
Services Tests (stable, false)	24m 33s
Services Tests (1.70.0, false)	29m 12s
Services Tests (nightly, true)	25m 53s
	8h 19m 44s

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