sys-var: increase max value for innodb_lock_wait_timeout

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• This PR is translated from:sys-var: increase max value for innodb_lock_wait_timeout docs#22212
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[LGTM Timeline notifier]

Timeline:

• 2025-12-23 05:07:10.73686254 +0000 UTC m=+2140775.550640112: ☑️ agreed by dveeden.
• 2026-04-10 12:34:14.147789495 +0000 UTC m=+1132459.353149542: ☑️ agreed by qiancai.