Separate station/unit tests and disable lavaland procgen and ruin spawning in tests (for now). (#28106)

* Separate station/unit tests and disable lavaland.

* add CI/local test conflict check back

code/tests/test_map_tests.dm

@@ -1,24 +1,3 @@
-/**
-  * Map per-tile test.
-  *
-  * Per-tile map tests iterate over each tile of a map to perform a check, and
-  * fails the test if a tile does not pass the check. A new test can be
-  * written by extending /datum/map_per_tile_test, and implementing the check
-  * in CheckTile.
-  */
-/datum/map_per_tile_test
-	var/succeeded = TRUE
-	var/list/fail_reasons
-	var/failure_count = 0
-
-/datum/map_per_tile_test/proc/CheckTile(turf/T)
-	Fail("CheckTile() called parent or not implemented")
-
-/datum/map_per_tile_test/proc/Fail(turf/T, reason)
-	succeeded = FALSE
-	LAZYADD(fail_reasons, "[T.x],[T.y],[T.z]: [reason]")
-	failure_count++
-
 /**
   * Check to ensure that APCs have a cable node on their tile.
   */