Convert the minified JS function names to proper names using source maps

[canova]

Once we have webchannel requests to get the source maps (#5110), we can change the JS function names during symbolication to find their real names and replace it with them.

Without this, it's hard for our users to understand the JS functions in the call tree. That's why they have to rely on the development builds.

┆Issue is synchronized with this Jira Task