Relax anti-label lint rules.

Created by: jannotti

Description

Lint rules complain about this:

outer:
for (const row of rows) {
  for (const elt of row) {
    if (elt === 0)
     break outer;
    // compute on elt
  }
}

which is the most succinct way to stop processing the current row and all following rows, once a zero is encountered anywhere.

They complain in two ways, first no-restricted-syntax complains about any label of any kind. Then no-labels complains twice, first about the label again, and second about the break statement with a label.

Expected behavior

No complaints. I'd probably be ok with a complaint about this:

label: {
   var a = f();
   if (something())
     break label;
   //etc
}

as that's weird (but apparently legal). However labels are needed on looping constructs for exactly the purpose outlined here.

Actual behavior

Three lint complaints.