Fix block validator custom tooltip

[vbaranov]

#2622

Motivation

Before:

After:

Changelog

Bug Fixes

• update .tooltipCustom class styles
• remove unused styles
• add use_custom_tooltip parameter for BlockScoutWeb.AddressView
• hide basic tooltip if use_custom_tooltip is true

Checklist for your Pull Request (PR)

• I added an entry to CHANGELOG.md with this PR
• If I added new functionality, I added tests covering it.
• If I fixed a bug, I added a regression test to prevent the bug from silently reappearing again.
• I checked whether I should update the docs and did so by submitting a PR to https://github.com/blockscout/docs
• If I added/changed/removed ENV var, I submitted a PR to https://github.com/blockscout/docs to update the list of env vars at https://github.com/blockscout/docs/blob/master/for-developers/information-and-settings/env-variables.md and I updated the version to master in the Version column. Changes will be reflected in this table: https://docs.blockscout.com/for-developers/information-and-settings/env-variables.
• If I add new indices into DB, I checked, that they are not redundant with PGHero or other tools

[coveralls]

Pull Request Test Coverage Report for Build 0b426a04-db41-418b-a625-16d5e3a173b7

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 3 unchanged lines in 2 files lost coverage.
• Overall coverage decreased (-0.04%) to 76.785%

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Files with Coverage Reduction	New Missed Lines	%
apps/indexer/lib/indexer/fetcher/token_instance.ex	1	14.29%
apps/block_scout_web/lib/block_scout_web/controllers/chain/market_history_chart_controller.ex	2	71.43%

Totals
Change from base Build 5a34f4b0-f9e1-41c3-a00b-ad47a04e51c0:	-0.04%
Covered Lines:	5302
Relevant Lines:	6905

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💛 - Coveralls