trait_impl_redundant_assoc_item fails if the files is a macro file

[saiintbrisson]

PR #15990 introduced a bug when unwrapping this file_id:

rust-analyzer/crates/ide-diagnostics/src/handlers/trait_impl_redundant_assoc_item.rs

Line 47 in 932d85b

FileRange { file_id: d.file_id.file_id().unwrap(), range: diagnostic_range },

The function returns None if the file is a macro file:

rust-analyzer/crates/span/src/lib.rs

Lines 253 to 259 in 932d85b

	#[inline]
	pub fn file_id(self) -> Option<FileId> {
	match self.0 & Self::MACRO_FILE_TAG_MASK {
	0 => Some(FileId::from_raw(self.0)),
	_ => None,
	}
	}

Maybe changing it to something like trait_impl_missing_assoc_item will work?

rust-analyzer/crates/ide-diagnostics/src/handlers/trait_impl_missing_assoc_item.rs

Lines 23 to 31 in f532576

	Diagnostic::new(
	DiagnosticCode::RustcHardError("E0046"),
	format!("not all trait items implemented, missing: {missing}"),
	adjusted_display_range::<ast::Impl>(
	ctx,
	InFile { file_id: d.file_id, value: d.impl_.syntax_node_ptr() },
	&|impl_| impl_.trait_().map(|t| t.syntax().text_range()),
	),
	)