component/open62541: fix "Could NOT find Python3"

there was a typo environement/environment, so slapos python was not
used. Another problem is that open62541 vendors (see [1]) an old version of
cmake's FindPython3 which does not lookup versions more recent that 3.8.

Fix this by removing the vendored FindPython3 to use the one from cmake.

[1]: https://github.com/open62541/open62541/blob/v1.3/tools/cmake/FindPython/Support.cmake#L20C7-L20C34

component/open62541/buildout.cfg

@@ -19,6 +19,10 @@ md5sum = c2e9938f082b027110fba538de76684c
 patch-options = -p1
 patches =
   ${:_profile_base_location_}/ipv6_bugfix.patch#355bec02adee4ea73ff5a56ba6971ad2
+pre-configure =
+  # remove old FindPython3 which does not know about python > 3.8 to
+  # use FindPython3 bundled with slapos' cmake
+  rm tools/cmake/FindPython3.cmake tools/cmake/FindPython/Support.cmake
 configure-command =
   ${cmake:location}/bin/cmake
 configure-options =
@@ -30,5 +34,5 @@ configure-options =
   -DUA_NAMESPACE_ZERO=REDUCED
 post-install =
   cp src/pubsub/*.h deps/open62541_queue.h @@LOCATION@@/include
-environement =
+environment =
   PATH=${python3:location}/bin:${patch:location}/bin:%(PATH)s