cleanup & simplify put_append_blob_00 example #3688

Job	Run time
Code Style	1m 12s
Get minimum supported rust version	22s
test AutoRust	3m 16s
SDK Tests (stable, false)	8m 38s
SDK Tests (1.70.0, false)	10m 40s
SDK Tests (nightly, true)	9m 38s
Services Tests (stable, false)	23m 48s
Services Tests (1.70.0, false)	29m 3s
Services Tests (nightly, true)	29m 7s
E2E Tests (stable, false)	45s
E2E Tests (1.70.0, false)	53s
E2E Tests (nightly, true)	33s
Integration Tests (stable, false)	7m 53s
Integration Tests (1.70.0, false)	8m 1s
Integration Tests (nightly, true)	7m 8s
	2h 20m 57s

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