New test for missed case.

Author: chriseth

test/libsolidity/semanticTests/inheritance/dataLocation/external_public_calldata.sol

@@ -0,0 +1,18 @@
+contract A {
+    function f(uint256[] calldata a) external virtual returns (uint256);
+}
+
+contract B is A {
+    function f(uint256[] calldata a) public override returns (uint256) {
+        return a[0];
+    }
+
+    function g(uint[] calldata x) public returns (uint256) {
+        return f(x);
+    }
+}
+// ====
+// compileViaYul: also
+// ----
+// f(uint256[]): 0x20, 1, 9 -> 23
+// g(uint256[]): 0x20, 1, 9 -> 23