refine post process

[2youyou2]

Re: #

Changelog

• add tool tips
• fix blit screen
• change fsr sharpness range to 0 => 1

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Continuous Integration

This pull request:

• needs automatic test cases check.

  Manual trigger with @cocos-robot run test cases afterward.

• does not change any runtime related code or build configuration

  If any reviewer thinks the CI checks are needed, please uncheck this option, then close and reopen the issue.

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Compatibility Check

This pull request:

• changes public API, and have ensured backward compatibility with deprecated features.
• affects platform compatibility, e.g. system version, browser version, platform sdk version, platform toolchain, language version, hardware compatibility etc.
• affects file structure of the build package or build configuration which requires user project upgrade.
• introduces breaking changes, please list all changes, affected features and the scope of violation.

[github-actions]

Interface Check Report

! WARNING this pull request has changed these public interfaces:

@@ -35304,10 +35304,14 @@
             updateActiveMateirals(): void;
             onLoad(): void;
         }
         export class TAA extends PostProcessSetting {
-            sampleScale: number;
-            feedback: number;
+            _sampleScale: number;
+            get sampleScale(): number;
+            set sampleScale(v: number);
+            _feedback: number;
+            get feedback(): number;
+            set feedback(v: number);
         }
         export class ColorGrading extends PostProcessSetting {
             protected _contribute: number;
             protected _colorGradingMap: Texture2D | null;