Fix double "no assets found" and add "<0.01%" distinction on interest rates comparison page

[zane-programs]

Hi y'all. Sorry I've been busy for the past few days—I'm currently doing a summer program that has made me busier than I had anticipated.

Anyway, while looking at the interest rate comparison page, I noticed that the "No assets match your search." message shows twice when you run a search and nothing comes up. I fixed it as soon as I noticed, and I also implemented the idea of a DAO Discord member to show "<0.01%" for interest rates that were rounded down by the toFixed call but were still greater than 0% APY.

If you have any questions or concerns, please let me know. Thanks so much!

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[coveralls]

Pull Request Test Coverage Report for Build 1050844956

• 5 of 19 (26.32%) changed or added relevant lines in 11 files are covered.
• 5 unchanged lines in 4 files lost coverage.
• Overall coverage increased (+0.4%) to 10.941%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/components/pages/InterestRates/InterestRates.tsx	0	1	0.0%
src/components/pages/InterestRates/InterestRatesView.tsx	0	1	0.0%
src/components/pages/InterestRates/TokenSearch.tsx	0	1	0.0%
src/components/pages/MultiPoolPortal.tsx	0	1	0.0%
src/utils/fetchFusePoolData.ts	0	1	0.0%
src/constants/saffron.ts	0	2	0.0%
src/context/RariContext.tsx	1	3	33.33%
src/components/pages/InterestRates/InterestRatesTable.tsx	0	5	0.0%
<!--	Total:	5	19	26.32%	-->

Files with Coverage Reduction	New Missed Lines	%
src/components/pages/InterestRates/InterestRates.tsx	1	0%
src/components/pages/InterestRates/TokenSearch.tsx	1	0%
src/components/pages/PoolPortal.tsx	1	0%
src/components/pages/InterestRates/InterestRatesView.tsx	2	0%
<!--	Total:	5		-->

Totals
Change from base Build 1016108272:	0.4%
Covered Lines:	865
Relevant Lines:	5775

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💛 - Coveralls