fix(ebpf): disable gotable fallback by default, make gotablefallback smarter

[korniltsev]

for golang binaries we create symbol table from .gopclntab section. it is useful for striped binaries.
It may be usefull to still look into .sym sections for non go functions ie cgo . Thus there's a GoTableWithFallback.
However for unstripped binaries it now keeps in memory duplicate symbols for go functions (both from .gopclntab and .sym )

This PR:

• disable gotable fallback by default
• when gotable fallback is enabled, do not duplicate symbols between gotable and .sym table

[kolesnikovae]

There must be a typo:

symbolOptions.FilterFrom = goTable.Index.Entry.Get(0)

[korniltsev]

yes!
I guess my test is broken as well :(

[korniltsev]

actually I dont know how to easily catch it with a test. the test works because it filters [0;last_go_symbol]
And in order to catch this typo I need to have a symbol in .sym in range [0;first_go_symbols] which I dont know how to do without messing with a linker.

I will just fix the typo and not improve test

Thanks!