fix: allow collateral weight = liquidation threshold

[toteki]

Previously #1956 prevented this, but this has made tokens with collateral weight = liquidation threshold = 0 invalid, including some in the existing mainnet registry.

[codecov]

Codecov Report

Merging #2052 (862cffb) into main (7f05ad4) will decrease coverage by 4.90%.
The diff coverage is 58.31%.

@@            Coverage Diff             @@
##             main    #2052      +/-   ##
==========================================
- Coverage   75.38%   70.49%   -4.90%     
==========================================
  Files         100      126      +26     
  Lines        8025     9605    +1580     
==========================================
+ Hits         6050     6771     +721     
- Misses       1589     2367     +778     
- Partials      386      467      +81     

Impacted Files	Coverage Δ
util/store/unmarshal.go	0.00% <0.00%> (ø)
x/incentive/codec.go	47.82% <ø> (+9.89%)	⬆️
x/incentive/keeper/hooks.go	0.00% <0.00%> (ø)
x/incentive/keeper/invariants.go	0.00% <0.00%> (ø)
x/leverage/keeper/incentive.go	0.00% <0.00%> (ø)
x/oracle/keeper/hooks.go	95.65% <ø> (ø)
x/ugov/keeper/msg_server.go	0.00% <0.00%> (ø)
x/ugov/keeper/query_server.go	0.00% <0.00%> (ø)
x/uibc/quota/keeper/genesis.go	0.00% <0.00%> (-100.00%)	⬇️
x/uibc/quota/keeper/grpc_query.go	0.00% <0.00%> (-76.93%)	⬇️
... and 46 more

... and 2 files with indirect coverage changes