[Net] Fix get_response_body_length for large files.

Parsing was fixed, but not the return value for the exposed getter.

core/io/http_client.h

@@ -180,7 +180,7 @@ public:
 	virtual bool is_response_chunked() const = 0;
 	virtual int get_response_code() const = 0;
 	virtual Error get_response_headers(List<String> *r_response) = 0;
-	virtual int get_response_body_length() const = 0;
+	virtual int64_t get_response_body_length() const = 0;
 
 	virtual PackedByteArray read_response_body_chunk() = 0; // Can't get body as partial text because of most encodings UTF8, gzip, etc.
 

core/io/http_client_tcp.cpp

@@ -534,7 +534,7 @@ Error HTTPClientTCP::poll() {
 	return OK;
 }
 
-int HTTPClientTCP::get_response_body_length() const {
+int64_t HTTPClientTCP::get_response_body_length() const {
 	return body_size;
 }
 

core/io/http_client_tcp.h

@@ -87,7 +87,7 @@ public:
 	bool is_response_chunked() const override;
 	int get_response_code() const override;
 	Error get_response_headers(List<String> *r_response) override;
-	int get_response_body_length() const override;
+	int64_t get_response_body_length() const override;
 	PackedByteArray read_response_body_chunk() override;
 	void set_blocking_mode(bool p_enable) override;
 	bool is_blocking_mode_enabled() const override;

platform/javascript/http_client_javascript.cpp

@@ -143,7 +143,7 @@ Error HTTPClientJavaScript::get_response_headers(List<String> *r_response) {
 	return OK;
 }
 
-int HTTPClientJavaScript::get_response_body_length() const {
+int64_t HTTPClientJavaScript::get_response_body_length() const {
 	return godot_js_fetch_body_length_get(js_id);
 }
 

platform/javascript/http_client_javascript.h

@@ -95,7 +95,7 @@ public:
 	bool is_response_chunked() const override;
 	int get_response_code() const override;
 	Error get_response_headers(List<String> *r_response) override;
-	int get_response_body_length() const override;
+	int64_t get_response_body_length() const override;
 	PackedByteArray read_response_body_chunk() override;
 	void set_blocking_mode(bool p_enable) override;
 	bool is_blocking_mode_enabled() const override;