feat: viewer should work in code builder if file is dragged into browser

[lcottercertinia]

Is your feature request related to a problem?

The log must first have been uploaded to code builder before it will open correctly.
We get an unhelpful error if the file is first dragged into code builder then we try open the analysis.

1. Drag a log file into code builder
2. use Log: Show Apex log analysis
3. It will not work and an error will be in console

Describe the solution you'd like

It should just work.
We may need to first write the open editor window into disc, if it is not already.

Describe alternatives you've considered

An alternative might be to read from local disc, but I do not know if the editor gives you the original file location or not.