Should these APIs consume user activation?

[josepharhar]

The showPicker() method in HTML consumes user activation:

• Consume user activation in show the picker whatwg/html#10344
• https://chromium-review.googlesource.com/c/chromium/src/+/5235516

Due to this issue, we might also make showOpenFilePicker and other things consume user activation as well:

• https://issues.chromium.org/issues/40059071
• https://chromium-review.googlesource.com/c/chromium/src/+/5735618