[number] Reduce NumberCall size by 4 bytes on 32-bit platforms (#12178)

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

esphome/components/number/number_call.h

@@ -8,7 +8,7 @@ namespace esphome::number {
 
 class Number;
 
-enum NumberOperation {
+enum NumberOperation : uint8_t {
   NUMBER_OP_NONE,
   NUMBER_OP_SET,
   NUMBER_OP_INCREMENT,
@@ -38,9 +38,9 @@ class NumberCall {
                                         float limit);
 
   Number *const parent_;
-  NumberOperation operation_{NUMBER_OP_NONE};
   optional<float> value_;
-  bool cycle_;
+  NumberOperation operation_{NUMBER_OP_NONE};
+  bool cycle_{false};
 };
 
 }  // namespace esphome::number