Update docs to mention EIP-6780 (prague,osaka)

Author: SamWilsn

src/ethereum/osaka/state.py

@@ -246,7 +246,8 @@ def mark_account_created(state: State, address: Address) -> None:
     """
     Mark an account as having been created in the current transaction.
     This information is used by `get_storage_original()` to handle an obscure
-    edgecase.
+    edgecase, and to respect the constraints added to SELFDESTRUCT by
+    EIP-6780.
 
     The marker is not removed even if the account creation reverts. Since the
     account cannot have had code prior to its creation and can't call

src/ethereum/osaka/vm/interpreter.py

@@ -189,7 +189,8 @@ def process_create_message(message: Message) -> Evm:
 
     # In the previously mentioned edge case the preexisting storage is ignored
     # for gas refund purposes. In order to do this we must track created
-    # accounts.
+    # accounts. This tracking is also needed to respect the constraints
+    # added to SELFDESTRUCT by EIP-6780.
     mark_account_created(state, message.current_target)
 
     increment_nonce(state, message.current_target)

src/ethereum/prague/state.py

@@ -246,7 +246,8 @@ def mark_account_created(state: State, address: Address) -> None:
     """
     Mark an account as having been created in the current transaction.
     This information is used by `get_storage_original()` to handle an obscure
-    edgecase.
+    edgecase, and to respect the constraints added to SELFDESTRUCT by
+    EIP-6780.
 
     The marker is not removed even if the account creation reverts. Since the
     account cannot have had code prior to its creation and can't call

src/ethereum/prague/vm/interpreter.py

@@ -187,7 +187,8 @@ def process_create_message(message: Message) -> Evm:
 
     # In the previously mentioned edge case the preexisting storage is ignored
     # for gas refund purposes. In order to do this we must track created
-    # accounts.
+    # accounts. This tracking is also needed to respect the constraints
+    # added to SELFDESTRUCT by EIP-6780.
     mark_account_created(state, message.current_target)
 
     increment_nonce(state, message.current_target)