Update dependency svelte to v5.50.3

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
svelte (source)	5.50.2 → 5.50.3

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Release Notes

sveltejs/svelte (svelte)

v5.50.3

Compare Source

Patch Changes

• fix: take into account nodeName case sensitivity on XHTML pages (#​17689)

• fix: render multiple and selected attributes as empty strings for XHTML compliance (#​17689)

• fix: always lowercase HTML elements, for XHTML compliance (#​17664)

• fix: freeze effects-inside-deriveds when disconnecting, unfreeze on reconnect (#​17682)

• fix: propagate $effect errors to <svelte:boundary> (#​17684)

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