Drop numeric support for AlertPayloadField

ee/lib/gitlab/alert_management/alert_payload_field_extractor.rb

@@ -31,7 +31,8 @@ module Gitlab
         )
       end
 
-      # TODO: Code duplication with Gitlab::InlineHash#merge_keys ahead!
+      # Code duplication with Gitlab::InlineHash#merge_keys ahead!
+      # See https://gitlab.com/gitlab-org/gitlab/-/issues/299856
       def deep_traverse(hash)
         return to_enum(__method__, hash) unless block_given?
 
@@ -54,8 +55,6 @@ module Gitlab
           'datetime'
         when String
           'string'
-        when Numeric
-          'numeric'
         when Array
           'array'
         end

ee/spec/lib/gitlab/alert_management/alert_payload_field_extractor_spec.rb

@@ -12,12 +12,10 @@ RSpec.describe Gitlab::AlertManagement::AlertPayloadFieldExtractor do
 
   subject(:fields) { extractor.extract(json) }
 
-  context 'plain' do
+  describe '#extract' do
     before do
       payload.merge!(
         str: 'value',
-        int: 23,
-        float: 23.5,
         nested: {
           key: 'level1',
           deep: {
@@ -32,11 +30,9 @@ RSpec.describe Gitlab::AlertManagement::AlertPayloadFieldExtractor do
       )
     end
 
-    it 'works' do
+    it 'returns all the possible field combination and types suggestions' do
       expect(fields).to contain_exactly(
         a_field(['str'], 'Str', 'string'),
-        a_field(['int'], 'Int', 'numeric'),
-        a_field(['float'], 'Float', 'numeric'),
         a_field(%w(nested key), 'Key', 'string'),
         a_field(%w(nested deep key), 'Key', 'string'),
         a_field(['time'], 'Time', 'datetime'),