fix: print value instead of pointer in ConfigCompatError

[buddh0]

Description

fix: print value instead of pointer in ConfigCompatError

Rationale

two errors in func ConfigCompatError as error info in the above picture

1. RewindToTime overflow
   for dev testnet, often set timebased hardfork to 0, so they will be enabled same with London Block at genesis
   for example in genesis.json
   "shanghaiTime": 0,
   then we change it
   "shanghaiTime": 1712889032,
   and run `geth --datadir ./ init ./genesis.json, then RewindToTime will overflow to the max of uint64 type

2. err.StoredTime and err.NewTime are pointers, print them is meaningless, their value are desired

Example

add an example CLI or API response...

Changes

Notable changes:

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