Fix incorrect handling of double quotes in stringify function in CKEditor inspector.

[Mati365]

Fix: Transform all single quotes passed to stringify function instead of only the first one.

Additional information

It looks like handling of " characters is broken in stringifySingleToDoubleQuotesReplacer, as it produces invalid JS code like this one:

stringify( `'foo'` ) // `""foo'"`

using replaceAll changes it to:

stringify( `'foo'` ) // `""foo""`

Which is still wrong because " are nested inside " character. I changed it to:

stringify( `'foo'` ) // `"\"foo\""`

Which looks better.