Wrap region fetching in a lock

[lukasIO]

so that only one fetch call at a time will be processed.

[changeset-bot]

⚠️ No Changeset found

Latest commit: a93bcd0

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[github-actions]

size-limit report 📦

Path	Size
dist/livekit-client.esm.mjs	84.09 KB (+0.06% 🔺)
dist/livekit-client.umd.js	92.71 KB (+0.13% 🔺)

[1egoman]

@lukasIO Looks like you are missing a changeset on this, just a reminder to add one before merging!