fix: address preview url encoding

[goldmane]

What does this PR do?

This PR addresses issue #554 by resolving a double-encoding, allowing the single component preview to properly function.

What issues does this PR fix or reference?

• A double encoding of the preview URI, causing a 400 error on sf:open
• Added unit test to scan all params for multiple encodings

[salesforce-cla]

Thanks for the contribution! It looks like @egoldman-sfdc is an internal user so signing the CLA is not required. However, we need to confirm this.

[rubicn]

@egoldman-sfdc
I'm experiencing this exact issue with scratch orgs. Getting a 400 error with the double-encoded URL localdev%252Fpreview. Looking forward to this fix being merged. Thanks for working on this!

[rubicn]

Hi @egoldman-sfdc , just checking in on this PR — we’re running into the same 400 error with double-encoded URLs (localdev%252Fpreview). All tests are passing on my side. Would love to get this merged when convenient. Thanks!

[goldmane]

@rubicn I'll look into where we're held up, but in the meantime if you want to fix it locally right now, you can pull down the pr branch, build and locally link it

• clone this repo
• in that directory, run yarn && yarn build to build the source
• run sf plugins link . to have the CLI use the plugin from that directory