APIv5: add `realm_id` param to `vlob_update` #21962

Job	Run time
📊 Q&A	1m 8s
dispatch	8s
spelling / cspell	20s
docs	0s
rust / 🐧 Linux: 🦀 Rust tests	6m 46s
rust / 🍎 macOS: 🦀 Rust tests	1m 53s
web / 🌐 Web tests	12m 56s
rust / 🏁 Windows: 🦀 Rust tests	7m 51s
python / (🐧 Linux only): 🐍 Python server tests	3m 25s
⭐ CI is happy ⭐	1s
	34m 28s

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