Renames the sentrybrowser7 package to sentrybrowser

What does this MR do and why?

Renames the sentrybrowser7 package to sentrybrowser

Renovate is currently unable to pick up the sentry upgrades as it's looking for the @sentry/browser package and we've renamed/aliased them to sentrybrowser5 and sentrybrowser7.

This allows us to add it to rennovate for upgrades without the potential confusion if we bump up the major version number.

We would also need to update renovate to look for this new alias with this line:

matchPackagePatterns: ["@sentry/browser", "sentrybrowser"]

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