pw_status: Replace Status::Ok() with OkStatus()

- Mark Status::Ok() and StatusWithSize::Ok() as deprecated.
- Replace Status::Ok() with OkStatus().
- Replace StatusWithSize::Ok() with StatusWithSize().

Change-Id: If7192282446bf6d7f90990bb0b4f1b1b89a9228a
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/29003
Pigweed-Auto-Submit: Wyatt Hepler <hepler@google.com>
Commit-Queue: Auto-Submit <auto-submit@pigweed.google.com.iam.gserviceaccount.com>
Reviewed-by: Keir Mierle <keir@google.com>
diff --git a/pw_sys_io_arduino/sys_io_arduino.cc b/pw_sys_io_arduino/sys_io_arduino.cc
index fbbc7bc..9e86c73 100644
--- a/pw_sys_io_arduino/sys_io_arduino.cc
+++ b/pw_sys_io_arduino/sys_io_arduino.cc
@@ -31,7 +31,7 @@
 Status ReadByte(std::byte* dest) {
   while (true) {
     if (TryReadByte(dest).ok()) {
-      return Status::Ok();
+      return OkStatus();
     }
   }
 }
@@ -41,7 +41,7 @@
     return Status::Unavailable();
   }
   *dest = static_cast<std::byte>(Serial.read());
-  return Status::Ok();
+  return OkStatus();
 }
 
 // Send a byte over USART1. Since this blocks on every byte, it's rather
@@ -54,7 +54,7 @@
   while (Serial.availableForWrite() < 1) {
   }
   Serial.write((uint8_t)b);
-  return Status::Ok();
+  return OkStatus();
 }
 
 // Writes a string using pw::sys_io, and add newline characters at the end.