Initialize `macro_depth` to the file's macro depth in docs.rs and assoc.rs

crates/hir-def/src/attrs/docs.rs

diff --git a/crates/hir-def/src/attrs/docs.rs b/crates/hir-def/src/attrs/docs.rs
index 876de36..0dd20c1 100644
--- a/crates/hir-def/src/attrs/docs.rs
+++ b/crates/hir-def/src/attrs/docs.rs
@@ -449,7 +449,7 @@
                                     DocMacroExpander {
                                         db,
                                         krate,
-                                        macro_depth: 0,
+                                        macro_depth: file_id.macro_expansion_depth(db),
                                         recursion_limit,
                                         resolver,
                                         file_id,

crates/hir-def/src/nameres/assoc.rs

diff --git a/crates/hir-def/src/nameres/assoc.rs b/crates/hir-def/src/nameres/assoc.rs
index 3f65829..8dea9a4 100644
--- a/crates/hir-def/src/nameres/assoc.rs
+++ b/crates/hir-def/src/nameres/assoc.rs
@@ -169,7 +169,7 @@
             container,
             items: Vec::new(),
 
-            macro_depth: 0,
+            macro_depth: file_id.macro_expansion_depth(db),
             macro_calls: ThinVec::new(),
             diagnostics: Vec::new(),
         }