Add back missing `tidy_checks`, since `tidy_checks_as_errors` isn't enough

I unfortunately missed in the original testing that
`tidy_checks_as_errors` isn't sufficient by itself. Instead we need to
have both places with the same variables. A future change will make
Soong expand `tidy_checks_as_errors` into both locations appropriately.

Bug: 119328308
Test: WITH_TIDY=1 DEFAULT_GLOBAL_TIDY_CHECKS=*,-readability-*,-google-readability-*,-google-runtime-references,-cppcoreguidelines-*,-modernize-*,-llvm-*,-bugprone-narrowing-conversions,-misc-non-private-member-variables-in-classes,-misc-unused-parameters,-hicpp-*,-fuchsia-* mm
Change-Id: If69f69bf7861ba3569756270381f3f737366f2f0
Merged-In: If69f69bf7861ba3569756270381f3f737366f2f0
(cherry picked from commit 56af5939)

cmds/idmap2/Android.bp

@@ -15,6 +15,14 @@
 cc_defaults {
     name: "idmap2_defaults",
     tidy: true,
+    tidy_checks: [
+        "modernize-*",
+        "-modernize-avoid-c-arrays",
+        "-modernize-use-trailing-return-type",
+        "android-*",
+        "misc-*",
+        "readability-*",
+    ],
     tidy_checks_as_errors: [
         "modernize-*",
         "-modernize-avoid-c-arrays",