fix: stop using unstable type params from postgrest-js

[soedirgo]

We're currently duplicating passing the type params to postgrest-js classes - we may change the order and/or add new type params on the postgrest-js side, so the type params in supabase-js can get out of sync.

This also fixes the issue in this demo (users in data should be T[], not T | null).

[github-actions[bot]]

Pull Request Test Coverage Report for Build 7382975635

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.5%) to 65.877%

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Totals
Change from base Build 7253131380:	0.5%
Covered Lines:	92
Relevant Lines:	119

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