Improve account transaction, trade, and valuation editing and sync experience (#1506)

* Consolidate entry controller logic

* Transaction builder

* Update trades controller to use new params

* Load account charts in turbo frames, fix PG overflow

* Consolidate tests

* Tests passing

* Remove unused code

* Add client side trade form validations

app/models/security/synth_combobox_option.rb

@@ -1,22 +1,8 @@
 class Security::SynthComboboxOption
   include ActiveModel::Model
-  include Providable
 
   attr_accessor :symbol, :name, :logo_url, :exchange_acronym, :exchange_mic, :exchange_country_code
 
-  class << self
-    def find_in_synth(query)
-      country = Current.family.country
-      country = "#{country},US" unless country == "US"
-
-      security_prices_provider.search_securities(
-        query:,
-        dataset: "limited",
-        country_code: country
-      ).securities.map { |attrs| new(**attrs) }
-    end
-  end
-
   def id
     "#{symbol}|#{exchange_mic}|#{exchange_acronym}|#{exchange_country_code}" # submitted by combobox as value
   end