Exclude nonconsensus blocks from avg block time calculation by default

CHANGELOG.md

@@ -8,6 +8,7 @@
 - [#2663](https://github.com/poanetwork/blockscout/pull/2663) - Fetch address counters in parallel
 
 ### Fixes
+- [#2701](https://github.com/poanetwork/blockscout/pull/2701) - Exclude nonconsensus blocks from avg block time calculation by default
 - [#2687](https://github.com/poanetwork/blockscout/pull/2687) - remove non-consensus token transfers, logs when inserting new consensus blocks
 - [#2684](https://github.com/poanetwork/blockscout/pull/2684) - do not filter pending logs
 - [#2682](https://github.com/poanetwork/blockscout/pull/2682) - Use Task.start instead of Task.async in caches

apps/explorer/config/config.exs

@@ -14,7 +14,7 @@ config :explorer,
     System.get_env("ALLOWED_EVM_VERSIONS") ||
       "homestead,tangerineWhistle,spuriousDragon,byzantium,constantinople,petersburg,default",
   include_uncles_in_average_block_time:
-    if(System.get_env("UNCLES_IN_AVERAGE_BLOCK_TIME") == "false", do: false, else: true),
+    if(System.get_env("UNCLES_IN_AVERAGE_BLOCK_TIME") == "true", do: true, else: false),
   healthy_blocks_period: System.get_env("HEALTHY_BLOCKS_PERIOD") || :timer.minutes(5)
 
 average_block_period =

docs/env-variables.md

@@ -56,6 +56,7 @@ $ export NETWORK=POA
 | `SUPPORTED_CHAINS` | | Array of supported chains that displays in the footer and in the chains dropdown. This var was introduced in this PR [#1900](https://github.com/poanetwork/blockscout/pull/1900) and looks like an array of JSON objects.  | (empty) |  v2.0.0+ | | |
 | `BLOCK_COUNT_CACHE_PERIOD ` | | time to live of cache in seconds. This var was introduced in [#1876](https://github.com/poanetwork/blockscout/pull/1876)  | 600 |  v2.0.0+ | | |
 | `ALLOWED_EVM_VERSIONS ` | | the comma-separated list of allowed EVM versions for contracts verification. This var was introduced in [#1964](https://github.com/poanetwork/blockscout/pull/1964)  | "homestead, tangerineWhistle, spuriousDragon, byzantium, constantinople, petersburg" |  v2.0.0+ | | |
+| `UNCLES_IN_AVERAGE_BLOCK_TIME` | Include or exclude nonconsensus blocks in avg block time calculation. Exclude if `false`. | false | v2.0.1+ | | |
 | `AVERAGE_BLOCK_CACHE_PERIOD` | | Update of average block cache, in seconds | 30 minutes | v2.0.2+ | |
 | `MARKET_HISTORY_CACHE_PERIOD` | | Update of market history cache, in seconds | 6 hours | v2.0.2+ | |
 | `DISABLE_WEBAPP` | | If `true`, endpoints to webapp are hidden (compile-time) | `false` | v2.0.3+ | :white_check_mark: | |