Use underscore for hacky rust-analyzer script (#21386)

Using dashes prevents the code from building, which is annoying
if you quickly want to test some hack.
With underscore we get the same effect but the code still builds.

scripts/sed-i-all-rs-files-for-rust-analyzer.sh

@@ -9,17 +9,17 @@ if [[ $1 = "doit" ]]; then
   # it's true that we put true just for truely-aligned lines
   # shellcheck disable=SC2046 # our rust files are sanely named with no need to escape
   true &&
-    sed -i -e 's/#\[cfg(test)\]/#[cfg(escaped-cfg-test)]/g' $(git ls-files :**.rs :^**/build.rs) &&
-    sed -i -e 's/#\[bench\]/#[cfg(escaped-bench)]/g' $(git ls-files :**.rs :^**/build.rs) &&
-    sed -i -e 's/#\[test\]/#[cfg(escaped-test)]/g' $(git ls-files :**.rs :^**/build.rs) &&
-    sed -i -e 's/#\[tokio::test\]/#[cfg(escaped-tokio-test)]/g' $(git ls-files :**.rs :^**/build.rs)
+    sed -i -e 's/#\[cfg(test)\]/#[cfg(escaped_cfg_test)]/g' $(git ls-files :**.rs :^**/build.rs) &&
+    sed -i -e 's/#\[bench\]/#[cfg(escaped_bench)]/g' $(git ls-files :**.rs :^**/build.rs) &&
+    sed -i -e 's/#\[test\]/#[cfg(escaped_test)]/g' $(git ls-files :**.rs :^**/build.rs) &&
+    sed -i -e 's/#\[tokio::test\]/#[cfg(escaped_tokio_test)]/g' $(git ls-files :**.rs :^**/build.rs)
 elif [[ $1 = "undoit" ]]; then
   # shellcheck disable=SC2046 # our rust files are sanely named with no need to escape
   true &&
-    sed -i -e 's/#\[cfg(escaped-cfg-test)\]/#[cfg(test)]/g' $(git ls-files :**.rs :^**/build.rs) &&
-    sed -i -e 's/#\[cfg(escaped-bench)\]/#[bench]/g' $(git ls-files :**.rs :^**/build.rs) &&
-    sed -i -e 's/#\[cfg(escaped-test)\]/#[test]/g' $(git ls-files :**.rs :^**/build.rs) &&
-    sed -i -e 's/#\[cfg(escaped-tokio-test)\]/#[tokio::test]/g' $(git ls-files :**.rs :^**/build.rs)
+    sed -i -e 's/#\[cfg(escaped_cfg_test)\]/#[cfg(test)]/g' $(git ls-files :**.rs :^**/build.rs) &&
+    sed -i -e 's/#\[cfg(escaped_bench)\]/#[bench]/g' $(git ls-files :**.rs :^**/build.rs) &&
+    sed -i -e 's/#\[cfg(escaped_test)\]/#[test]/g' $(git ls-files :**.rs :^**/build.rs) &&
+    sed -i -e 's/#\[cfg(escaped_tokio_test)\]/#[tokio::test]/g' $(git ls-files :**.rs :^**/build.rs)
 else
   echo "usage: $0 [doit|undoit]" > /dev/stderr
   exit 1