Use try-with-resources for AutoClosables where feasible

Where unfeasible, this commit adds inline comments to explain why
try-with-resources must not be used in certain scenarios. The purpose
of the comments is to avoid accidental conversion to try-with-resources
at a later date.

Closes gh-27823

spring-core/src/main/java/org/springframework/core/LocalVariableTableParameterNameDiscoverer.java

@@ -101,6 +101,8 @@ public class LocalVariableTableParameterNameDiscoverer implements ParameterNameD
 			}
 			return NO_DEBUG_INFO_MAP;
 		}
+		// We cannot use try-with-resources here as, potential, exception upon closing
+		// would still bubble up the stack
 		try {
 			ClassReader classReader = new ClassReader(is);
 			Map<Executable, String[]> map = new ConcurrentHashMap<>(32);