Change subnet initial supply fallback value

Author: ales-otf

pallets/subtensor/src/subnets/subnet.rs

@@ -3,6 +3,7 @@ use frame_support::IterableStorageMap;
 use sp_core::Get;
 
 pub(crate) const POOL_INITIAL_TAO: u64 = 100_000_000_000;
+pub(crate) const POOL_INITIAL_TAO_FALLBACK: u64 = 500;
 
 impl<T: Config> Pallet<T> {
     /// Retrieves the unique identifier (UID) for the root network.
@@ -240,8 +241,8 @@ impl<T: Config> Pallet<T> {
         if pool_initial_tao > actual_tao_lock_amount {
             pool_initial_tao = actual_tao_lock_amount;
         }
-        if pool_initial_tao < 1 {
-            pool_initial_tao = 1;
+        if pool_initial_tao == 0 {
+            pool_initial_tao = POOL_INITIAL_TAO_FALLBACK;
         }
         let actual_tao_lock_amount_less_pool_tao =
             actual_tao_lock_amount.saturating_sub(pool_initial_tao);