Fix CA1031 violations: Catch specific allow exception type

src/NetAnalyzers/Core/Microsoft.NetCore.Analyzers/Performance/ConstantExpectedAnalyzer.UnmanagedHelper.cs

@@ -233,14 +233,18 @@ private static bool TryConvertSignedInteger(object constant, out long integer)
 
                 integer = Convert.ToInt64(constant);
             }
-            catch
+            catch (Exception ex) when (CatchExceptionDuringConvert(ex))
             {
                 integer = default;
                 return false;
             }
 
             return true;
         }
+
+        private static bool CatchExceptionDuringConvert(Exception ex)
+            => ex is FormatException or InvalidCastException or OverflowException or ArgumentNullException;
+
         private static bool TryConvertUnsignedInteger(object constant, out ulong integer)
         {
             try
@@ -253,7 +257,7 @@ private static bool TryConvertUnsignedInteger(object constant, out ulong integer
 
                 integer = Convert.ToUInt64(constant);
             }
-            catch
+            catch (Exception ex) when (CatchExceptionDuringConvert(ex))
             {
                 integer = default;
                 return false;
@@ -306,7 +310,7 @@ private static bool TryTransformChar(object constant, out char value, out bool i
 
                 value = Convert.ToChar(constant);
             }
-            catch
+            catch (Exception ex) when (CatchExceptionDuringConvert(ex))
             {
                 return Invalid(out value, out isInvalid);
             }