Reference counts are incorrect in TS code lenses

[vscodenpa]

In TypeScript, the reference counts shown in codelenses are incorrect

• open async.ts and go to first
• observe the code lens shows 7 references
• in reality, there are only 4 references, 3 of those locations are imports which are an artefact of the real references, they should not be counted as references.
• this dillutes a lot the value of having a number in the code lens and makes it difficult to understand