Hi, what do you think about removing length limit in navigation bar service for function expression?

It might be very useful for example in Visual Studio Code. VSCode uses navigation bar service for "jump to symbol". And when there is a function expression with long name it shows only 17 characters.

Current behaviour:

After changes from this PR:

Here is code on which you can check current behaviour:

blocks['some-block-with-long-name'] = function(params) {}
blocks['some-block-with-long-name2'] = function(params) {}
blocks['some-block-with-long-name3'] = function(params) {}
blocks['some-block-with-long-name4-much-longer-that-i-have-ever-exptected-it-to-be-so-it-doesnt-fit-in-one-line'] = function(params) {}

And this limit looks a bit strange because if you put var in front of function expression you'll get whole name. So it should not break anything :).

test_variable_with_very_long_name_much_longer_that_i_ve_ever_expected = function(params) {}
var test_variable_with_very_long_name_much_longer_that_i_ve_ever_expected2 = function(params) {}