fix(binding): use UnmarshalText for types like enum

[xiaost]

What type of PR is this?

fix

Check the PR title.

• This PR title match the format: <type>(optional scope): <description>
• The description of this PR title is user-oriented and clear enough for others to understand.
• Attach the PR updating the user documentation if the current PR requires user awareness at the usage level. User docs repo

(Optional) Translate the PR title into Chinese.

(Optional) More detailed description for this PR(en: English/zh: Chinese).

en:
for enum type we generate String() and use it by default for sending requests.
if users also use the type for binding, it will fail with strconv.ParseInt err.
This change make use of the generated UnmarshalText func and fall back to strconv.ParseInt if any err.

zh(optional):

[codecov]

Codecov Report

Attention: Patch coverage is 84.00000% with 4 lines in your changes missing coverage. Please review.

Project coverage is 74.00%. Comparing base (faae220) to head (92a0323).
Report is 4 commits behind head on develop.

Files with missing lines	Patch %	Lines
...rver/binding/internal/decoder/base_type_decoder.go	0.00%	4 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1359      +/-   ##
===========================================
+ Coverage    73.68%   74.00%   +0.31%     
===========================================
  Files          145      145              
  Lines        16860    16878      +18     
===========================================
+ Hits         12423    12490      +67     
+ Misses        3848     3794      -54     
- Partials       589      594       +5     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.