RES: Fix cache invalidation after change "Expand macros" settings

[dima74]

Currently when change "Expand macros" option, we have two problems:

• CrateDefMaps don't rebuild
• structureModificationTracker doesn't increment if option was disabled but becomes enabled

---

This may lead to problems like (thanks @neonaot):

macro_rules! gen {
    () => { fn func() {} }
}
gen!();
fn main() {
    func();
}

• Disable "Expand macros" - func is unresolved (good)
• Enable "Expand macros" - func is still unresolved (bad)

changelog: Fix cache invalidation after change "Expand macros" settings

[vlad20012]

bors r+

[bors]

Build succeeded:

• check