Skipping to 2E in 2C should not be conditional

[eps1lon]

Currently we skip to 2E in 2C only if

[...] the current node has an aria-label attribute whose value is not the empty string, nor, when trimmed of white space, is not the empty string:

AND

If traversal of the current node is due to recursion and the current node is an embedded control as defined in step 2E, ignore aria-label and skip to rule 2E.

This means that for an embedded control we would still run 2D if it has an empty aria-label.

<input type="checkbox" id="my-checkbox" />
<label for="my-checkbox">
  Country
  <input type="text" role="combobox" title="Choose country" value="Germany" />
</label>

the accessible name of #my-checkbox would compute to Country Choose Country not Country Germany. It would follow steps

1. checkbox 2D
2. label 2F
3. Text Node 2G
4. combobox 2D (2C does not apply as it doesn't have an aria-label but a title attribute)

I posted a slightly different markup to the mailing list which is directly taken from the name_heading-combobox-focusable-alternative-manual web-platform-test:

<h2 id="test">
  Country of origin:
  <input role="combobox" type="text" title="Choose your country." value="United States">
</h2>

However, I do not think we should skip to 2E either because while the combobox is a control as defined in 2E it is not embedded in a label.

Opening this as requested by @accdc