fix(55945): Inlay hints don't work for bigint literals

[a-tarasyuk]

Fixes #55945

[MariaSolOs]

I would prefer adding an extra check before the switch to handle literal nodes:

if (tokenString) {
  parts.push({ text: tokenString });
  return;
}

if (isLiteralExpression(node)) { // New check
  parts.push({ text: node.text });
  return;
}

switch (node.kind) { ...

We can then remove these cases:

TypeScript/src/services/inlayHints.ts

Lines 489 to 494 in c66d0dc

	case SyntaxKind.NumericLiteral:
	parts.push({ text: (node as NumericLiteral).text });
	break;
	case SyntaxKind.StringLiteral:
	parts.push({ text: `"${(node as StringLiteral).text}"` });
	break;

[MariaSolOs]

LGTM! I'll merge this now since you've addressed @DanielRosenwasser's (and my) suggestions.

Thanks again for the fix @a-tarasyuk (and your patience 😅)