fix(node): better special character encoding and detection

[skjnldsv]

Not sure why it fails on 4.0.0 now, discovered on nextcloud/server#56743 while working on the https://github.com/nextcloud/server/blob/d87114287b4bd3c90209dab70f7f0dc0bbb47426/apps/files/src/actions/openFolderAction.ts

Here are the failures without this fix:

FAIL  __tests__/files/node.spec.ts > Encoded source is handled properly > File with special characters
AssertionError: expected '/Photos~⛰️ shot of a $[big} mountain/…' to be '/Photos~⛰️ shot of a $[big} mountain/…' // Object.is equality

Expected: "/Photos~⛰️ shot of a $[big} mountain/really #1's.md"
Received: "/Photos~⛰️ shot of a $[big} mountain/really "

 ❯ __tests__/files/node.spec.ts:753:21
    751| 
    752|   expect(file.encodedSource).toBe('https://cloud.domain.com/remote.php/dav/files/em%20ma!/Photos~%E2%9B%B0%EF%B8%8F%20shot%20of%20a%…
    753|   expect(file.path).toBe('/Photos~⛰️ shot of a $[big} mountain/really #1\'s.md')
       |                     ^
    754|   expect(file.basename).toBe('really #1\'s.md')
    755|  })

FAIL  __tests__/files/node.spec.ts > Encoded source is handled properly > Folder with question mark
AssertionError: expected '/' to be '/Photos?' // Object.is equality

Expected: "/Photos?"
Received: "/"

 ❯ __tests__/files/node.spec.ts:765:23
    763| 
    764|   expect(folder.encodedSource).toBe('https://cloud.domain.com/remote.php/dav/files/emma%3F/Photos%3F')
    765|   expect(folder.path).toBe('/Photos?')
       |                       ^
    766|   expect(folder.basename).toBe('Photos?')
    767|  })

FAIL  __tests__/files/node.spec.ts > Encoded source is handled properly > Folder with percent characters
URIError: URI malformed
 ❯ Folder.get path [as path] lib/node/node.ts:274:16
    272|  get path(): string {
    273|   const url = new URL(this.source)
    274|   let source = decodeURI(url.pathname)
       |                ^
    275| 
    276|   if (this.isDavResource) {
 ❯ __tests__/files/node.spec.ts:777:17

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.74%. Comparing base (cd0ed22) to head (5135de7).
⚠️ Report is 8 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1398      +/-   ##
==========================================
+ Coverage   90.64%   90.74%   +0.09%     
==========================================
  Files          23       23              
  Lines         652      659       +7     
  Branches      175      175              
==========================================
+ Hits          591      598       +7     
  Misses         50       50              
  Partials       11       11              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.