Fix issues with Oreo

[charithag]

Purpose

Fix compatibility issues with Oreo.

Goals

Fix System UI freezing issue in Oreo and improve comparability with API level 26.

Approach

Modify notification intents to be compatible with Oreo.

User stories

N/A

Release note

Fix compatibility issues with Oreo.

Documentation

N/A

Training

N/A

Certification

N/A, Compatibility improvement

Marketing

N/A

Automation tests

N/A

Security checks

• Followed secure coding standards in http://wso2.com/technical-reports/wso2-secure-engineering-guidelines? yes
• Ran FindSecurityBugs plugin and verified report? yes
• Confirmed that this PR doesn't commit any keys, passwords, tokens, usernames, or other secrets? yes

Samples

N/A

Related PRs

N/A

Migrations (if applicable)

Support migrations form 3.1.31 and higher

Test environment

Android API 24, 26

Learning

N/A