starlark find call by name support dot expression

Summary:
We find the case when the target rule name with dot, the find call by name will not work this is because the the dotted name rule is wrapped with Dot expression not Identifier:
```
utils.func.infra_elaborated_model(
    name = "run_fb_inf_ccp_ss_dv_ax45mp_stub_vcs",
    top = "ccp_ax45mp_stub",
)
```
=>
```
Dot(
	Spanned {
		node: Dot(
			Spanned {
				node: Identifier(Spanned { node: IdentP { ident: "utils", payload: () }, span: Span { begin: Pos(464), end: Pos(469) } }),
				span: Span { begin: Pos(464), end: Pos(469) }
			},
			Spanned { node: "func", span: Span { begin: Pos(470), end: Pos(474) } }),
		span: Span { begin: Pos(464), end: Pos(474) }
	},
	Spanned { node: "infra_elaborated_model", span: Span { begin: Pos(475), end: Pos(497) } }
)
```

Reviewed By: JakobDegen

Differential Revision: D72725012

fbshipit-source-id: 9dfafc98edfa45214279cfdc370aeec57ba4cd56

Author: Yutian Song

starlark/src/analysis/find_call_name.rs

@@ -51,7 +51,7 @@ impl AstModuleFindCallName for AstModule {
                     node: Expr::Call(identifier, arguments),
                     ..
                 } => {
-                    if let Expr::Identifier(_) = &identifier.node {
+                    if matches!(&identifier.node, Expr::Identifier(_) | Expr::Dot(_, _)) {
                         let found =
                             arguments
                                 .args
@@ -100,6 +100,8 @@ foo(name = "foo_name")
 bar("bar_name")
 baz(name = "baz_name")
 
+utils.foo(name = "dot_name")
+
 def x(name = "foo_name"):
     pass
 "#;
@@ -121,6 +123,15 @@ def x(name = "foo_name"):
                 .map(|span| module.codemap().resolve_span(span))
         );
         assert_eq!(None, module.find_function_call_with_name("bar_name"));
+        assert_eq!(
+            Some(ResolvedSpan {
+                begin: ResolvedPos { line: 5, column: 0 },
+                end: ResolvedPos { line: 5, column: 9 }
+            }),
+            module
+                .find_function_call_with_name("dot_name")
+                .map(|span| module.codemap().resolve_span(span))
+        );
         Ok(())
     }
 }