Make coverage more similar to the one in Scala 2 (scala#23722)

Closes scala#21877
* removes coverage of inlined nodes (as mentioned in the accompanying
comment, those are impossible to represent in most cases)
* adds coverage for Literals (ones directly in Apply are omitted)
* removes coverage of `throw` contents
* if apply node is tagged, we do not tag it's prefix, outside of other
prefixing Apply's arguments (eg. when we tag `a+b+c` we do not
redundantly tag `a+b`)
* allows instrumenting synthetic method calls (like apply of a case 

After all of these changes the statements tagged are much more similar
to Scala 2, let's look at the scala#21877 minimisation:
* Scala 2:
<img width="704" height="364" alt="Zrzut ekranu 2025-08-12 o 17 07 31"
src="https://github.com/user-attachments/assets/f647dfa5-973e-424f-9818-483b7d01d550"
/>
<img width="740" height="379" alt="Zrzut ekranu 2025-08-12 o 17 07 46"
src="https://github.com/user-attachments/assets/09eca1c0-a202-4e5e-b3e4-0947d9e8662d"
/>

* Scala 3:
<img width="623" height="360" alt="Zrzut ekranu 2025-08-12 o 17 08 48"
src="https://github.com/user-attachments/assets/efd5baaa-9f52-4ad6-9ba6-2f5bde42a470"
/>
<img width="638" height="428" alt="Zrzut ekranu 2025-08-12 o 17 08 55"
src="https://github.com/user-attachments/assets/01ff6cc6-c348-47db-8ae5-d758ca0bf302"
/>


There are some differences still remaining, most notably the tagging the
DefDefs and its default parameters, but I left them for now, as those
seem more useful than harmful.

BEcouse of those changed most of the .covergae files had to be
regenerated, however I want through each and every diff to make sure
that all of those changes there are expected.

Additionally, this PR also fixes scala#21695 (issue with certain generated
Block nodes not having assigned the correct type, causing later
undefined errors).
[Cherry-picked c535dbc][modified]

Author: tgodzik