Fix src/tests/build.sh argument processing (#81836)

The logic to process test filter args isn't working correctly
because the `shift` happens inside a sourced script, and doesn't
actually shift the outer arguments. The right way to do this is
via `__ShiftArgs`.

Without this fix, `tree nativeaot` was working because
`nativeaot` happened to be a supported argument as well. With the
fix, other test subtrees work as expected.

Author: sbomer

src/tests/build.sh

@@ -239,8 +239,8 @@ handle_arguments_local() {
             local arg="$1"
             local parts=(${arg//:/ })
             if [[ ${#parts[@]} -eq 1 ]]; then
-                shift
-                __BuildTestProject="$__BuildTestProject$1%3B"
+                __BuildTestProject="$__BuildTestProject$2%3B"
+                __ShiftArgs=1
             else
                 __BuildTestProject="$__BuildTestProject${parts[1]}%3B"
             fi
@@ -250,8 +250,8 @@ handle_arguments_local() {
             local arg="$1"
             local parts=(${arg//:/ })
             if [[ ${#parts[@]} -eq 1 ]]; then
-                shift
-                __BuildTestDir="$__BuildTestDir$1%3B"
+                __BuildTestDir="$__BuildTestDir$2%3B"
+                __ShiftArgs=1
             else
                 __BuildTestDir="$__BuildTestDir${parts[1]}%3B"
             fi
@@ -261,8 +261,8 @@ handle_arguments_local() {
             local arg="$1"
             local parts=(${arg//:/ })
             if [[ ${#parts[@]} -eq 1 ]]; then
-                shift
-                __BuildTestTree="$__BuildTestTree$1%3B"
+                __BuildTestTree="$__BuildTestTree$2%3B"
+                __ShiftArgs=1
             else
                 __BuildTestTree="$__BuildTestTree${parts[1]}%3B"
             fi
@@ -304,8 +304,8 @@ handle_arguments_local() {
             local arg="$1"
             local parts=(${arg//:/ })
             if [[ ${#parts[@]} -eq 1 ]]; then
-                shift
-                __BuildLogRootName="$1"
+                __BuildLogRootName="$2"
+                __ShiftArgs=1
             else
                 __BuildLogRootName="${parts[1]}"
             fi