Fix `quantum/split_common/matrix.c: select_col()/select_row()` (#5174)

* add temporary pdhelix(Patched Helix) code

* add test code into  quantum/split_common/matrix.c

* add test code into keyboards/handwired/pdhelix/

* Revert "add test code into keyboards/handwired/pdhelix/"

This reverts commit 9ed98f0797ddd962c99756689fc4ecb4cd067d3d.

* Revert "add test code into  quantum/split_common/matrix.c"

This reverts commit 1876d3ed69f6c213153a9f6476192be839f16c1f.

* Revert "add temporary pdhelix(Patched Helix) code"

This reverts commit 41ac92b814e3f894eaf85bc3e5bb945895342fa8.

* fix quantum/split_common/matrix.c: select_col()/select_row()

quantum/split_common/matrix.c

@@ -143,8 +143,8 @@ static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row)
 #elif (DIODE_DIRECTION == COL2ROW)
 
 static void select_row(uint8_t row) {
-  writePinLow(row_pins[row]);
   setPinOutput(row_pins[row]);
+  writePinLow(row_pins[row]);
 }
 
 static void unselect_row(uint8_t row) { setPinInputHigh(row_pins[row]); }
@@ -188,8 +188,8 @@ static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row)
 #elif (DIODE_DIRECTION == ROW2COL)
 
 static void select_col(uint8_t col) {
-  writePinLow(col_pins[col]);
   setPinOutput(col_pins[col]);
+  writePinLow(col_pins[col]);
 }
 
 static void unselect_col(uint8_t col) { setPinInputHigh(col_pins[col]); }