fix(gatsby-plugin-offline): Change navigation handler logic

[vtenfys]

The more "stable" part of #11965

Changes:

• Remove page path whitelist
• Whenever a path has finished prefetching, store the name of its resource files in the IDB
• Replace resetWhitelist API with clearPathResources, which clears the page resource dependencies
• When loading a page from SW, check the correct app bundle is present and all the resources for the page
  • If not, or if the resource filename list isn't found, serve from the network

Rationale: using the path whitelist turned out to be buggy, especially during upgrades when files could be in inconsistent state. Many of the initial bugs were fixed, but some of the fixes are more workarounds than proper solutions which can still result in temporary white screen flashes.

Therefore these changes should be more reliable, since by checking the main bundle is present as well as the required resource files, we can be more sure that the latest essential files are cached rather than just looking at a list.

[m-allanson]

@davidbailey00 I'm going to close this for now. Let's come back and re-open it once you're back in (Gatsby) action!

[sidharthachatterjee]

Looks great! Let's ship this 👍

[vtenfys]

ayy

[sidharthachatterjee]

👍