Ads Purchase Intent funnel keyword with higher weight is ignored

[btlechowski]

Follow up to #8047

keyword dealer opening times has weight 3
keyword sell has weight 2

audi a5 dealer opening times - weight 3
audi a5 dealer opening times sell - weight 2
audi a5 sell dealer opening times - weight 2

The highest weight should be used

Steps to Reproduce

1. Clean profile
2. Connect to US
3. Run Brave with command line: /usr/bin/brave-browser --enable-logging=stderr --vmodule=brave_ads=3 --brave-ads-staging --rewards=staging=true
4. Enable Rewards
5. Search for audi a5 dealer opening times sell in URL bar
6. Check weight for automotive purchase intent by make-audi in Default/ads_service/client.json

Actual result:

audi a5 dealer opening times sell - weight 2

Expected result:

The highest weight should be used
audi a5 dealer opening times sell - weight 3

Reproduces how often:

100% repro rate

Brave version (brave://version info)

Brave	1.7.78 Chromium: 80.0.3987.149 (Official Build) dev (64-bit)
Revision	5f4eb224680e5d7dca88504586e9fd951840cac6-refs/branch-heads/3987_137@{#16}
OS	Ubuntu 18.04 LTS

cc @brave/legacy_qa @rebron @tmancey @moritzhaller

[LaurenWags]

@moritzhaller when you get a chance, please ensure the following:

• this issue is assigned a milestone (in most cases the milestone should probably be the version master is on)
• corresponding PR is assigned a milestone (in most cases the milestone should probably be the version master is on)
• corresponding PR has a test plan to test this issue

let me know if you have any questions 😄

[btlechowski]

Verification passed on

Brave	1.9.55 Chromium: 81.0.4044.129 (Official Build) dev (64-bit)
Revision	3d71af9f5704a40b85806f4d08925db24605ba25-refs/branch-heads/4044@{#979}
OS	Ubuntu 18.04 LTS

Verified test plan from brave/brave-core#5180
Verified weight is 3.

"automotive purchase intent by make-audi":[{"timestamp_in_seconds":1588708652,"weight":3}]

Verification passed on

Brave | 1.9.63 Chromium: 81.0.4044.138 (Official Build) dev (64-bit)
-- | --
Revision | 8c6c7ba89cc9453625af54f11fd83179e23450fa-refs/branch-heads/4044@{#999}
OS | Windows 10 OS Version 1803 (Build 17134.1006)

Verified test plan from brave/brave-core#5180
Verified weight is 3.

 "automotive purchase intent by make-audi": [
      {
        "timestamp_in_seconds": 1589276484,
        "weight": 3
      }
    ]

Verified passed with

Brave | 1.9.68 Chromium: 81.0.4044.138 (Official Build) (64-bit)
-- | --
Revision | 8c6c7ba89cc9453625af54f11fd83179e23450fa-refs/branch-heads/4044@{#999}
OS | macOS Version 10.14.6 (Build 18G3020)

• Verified test plan from Fix Ads Purchase Intent funnel keyword with higher weight is ignored brave-core#5180

    "automotive purchase intent by make-audi": [
      {
        "timestamp_in_seconds": 1589571879,
        "weight": 3
      }
    ]