Enhance security information retrieval and handling (#1826)

* Enhance security information retrieval and handling

- Add support for operating MIC codes in security info fetching
- Update security uniqueness validation to handle unknown securities
- Improve security creation and update logic in Plaid investment sync
- Update combobox and view components to handle operating MIC codes
- Add unknown flag for securities with incomplete information

* Update schema.rb

* Refactor the need for mic codes

* Don't fetch prices unless a security has the necessary mic code

* Deduplication

* Lint

* Update Securities and Plaid Investment Sync

- Modify PlaidInvestmentSync to return plaid_security for USD cash
- Add non-null constraint to Securities ticker column
- Update Securities fixture to use exchange_operating_mic instead of exchange_mic

---------

Signed-off-by: Josh Pigford <josh@joshpigford.com>

app/models/provider/synth.rb

@@ -145,6 +145,7 @@ class Provider::Synth
         logo_url: security.dig("logo_url"),
         exchange_acronym: security.dig("exchange", "acronym"),
         exchange_mic: security.dig("exchange", "mic_code"),
+        exchange_operating_mic: security.dig("exchange", "operating_mic_code"),
         country_code: security.dig("exchange", "country_code")
       }
     end
@@ -155,9 +156,10 @@ class Provider::Synth
       raw_response: response
   end
 
-  def fetch_security_info(ticker:, mic_code:)
+  def fetch_security_info(ticker:, mic_code: nil, operating_mic: nil)
     response = client.get("#{base_url}/tickers/#{ticker}") do |req|
-      req.params["mic_code"] = mic_code
+      req.params["mic_code"] = mic_code if mic_code.present?
+      req.params["operating_mic"] = operating_mic if operating_mic.present?
     end
 
     parsed = JSON.parse(response.body)