fix(browser): Parse frames-only safari(-web)-extension stack

[kamilogorek]

Fixes #3313

[lobsterkatie]

From what I can tell this looks fine, but without knowing much of the context (even having read that issue), it's a little hard to tell. Would you mind adding just a sentence or two to the PR description saying specifically what was wrong/got changed here? I know from the issue that the stack was getting parsed wrong, but why? How does this fix it?

[github-actions]

size-limit report

Path	Size
@sentry/browser - CDN Bundle (gzipped)	21.65 KB (-0.01% 🔽)
@sentry/browser - Webpack	22.66 KB (0%)
@sentry/react - Webpack	22.7 KB (0%)
@sentry/browser + @sentry/tracing - CDN Bundle (gzipped)	29.08 KB (-0.01% 🔽)

[AbhiPrasad]

if extractSafariExtensionDetails() is always called with the isSafariExtension(func) || isSafariWebExtension(func) check, can we move the boolean check into the function?

Can possibly save on some bytes as well.

const extractSafariExtensionDetails = (func: string, url: string): [string, string] => {
  const isSafariExtension = func.indexOf('safari-extension') !== -1;
  const isSafariWebExtension = func.indexOf('safari-web-extension') !== -1;
  if (isSafariExtension || isSafariWebExtension) {
    return [
      func.indexOf('@') !== -1 ? func.split('@')[0] : UNKNOWN_FUNCTION,
      isSafariExtension ? `safari-extension:${url}` : `safari-web-extension:${url}`,
    ];
  }
  return [func, url];
};

[kamilogorek]

@lobsterkatie added appropriate comment
@AbhiPrasad fixed