Fix SMP debugging issue on rp2040 (#1174)

* Fix SMP debugging issue on rp2040

Related to #1172

Add `multicore_reset_core1` before `multicore_launch_core1` in `xPortStartScheduler` function to fix debugging issue on rp2040 with SMP enabled.

* Modify `portable/ThirdParty/GCC/RP2040/port.c` to include a call to `multicore_reset_core1` before `multicore_launch_core1` within the `#if portRUNNING_ON_BOTH_CORES` block.

* Recover comments back

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Co-authored-by: ActoryOu <jay2002824@gmail.com>
Co-authored-by: Gaurav-Aggarwal-AWS <33462878+aggarg@users.noreply.github.com>
Co-authored-by: Rahul Kar <118818625+kar-rahul-aws@users.noreply.github.com>

portable/ThirdParty/GCC/RP2040/port.c

diff --git a/portable/ThirdParty/GCC/RP2040/port.c b/portable/ThirdParty/GCC/RP2040/port.c
index 6c5d0e5..78c11bd 100644
--- a/portable/ThirdParty/GCC/RP2040/port.c
+++ b/portable/ThirdParty/GCC/RP2040/port.c
@@ -378,6 +378,7 @@
         #if portRUNNING_ON_BOTH_CORES
             ucPrimaryCoreNum = configTICK_CORE;
             configASSERT( get_core_num() == 0 ); /* we must be started on core 0 */
+            multicore_reset_core1();
             multicore_launch_core1( prvDisableInterruptsAndPortStartSchedulerOnCore );
         #else
             ucPrimaryCoreNum = get_core_num();