Fix suggestion for #4253

[OfekShilon]

In the cpp tokenizer, angled brackets (<>) were separated from other brackets to hold an additional post-condition:

...
	[/[{}()\[\]]/, '@brackets'],
	[/[<>](?!@symbols)/, '@brackets'],    // <----

Not sure why, one guessed motivation is that a tokenizer needs to be extra careful with < since it might eventually resolve to the operator <<. However,

(1) this doesn't solve it, << is still not tokenized to an operator (it fails all tokenizer regexes),

(2) this extra-liberal exclusion causes bugs like #4253.

This suggested fix treats angled-brackets identically to other brackets. A true c++-conforming tokenizer might require @rematch and other heavy machinery, but this one is pretty certain to be at least some step forward.

[OfekShilon]

Ping

[hediet]

Thanks for the PR!