Update help texts and make update 7 bal-tools.toml compatible with update 8

[gayaldassanayake]

Purpose

$ subject

Fixes #40264

Approach

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Samples

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Remarks

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Check List

• Read the Contributing Guide
• Updated Change Log
• Checked Tooling Support (#)
• Added necessary tests
  • Unit Tests
  • Spec Conformance Tests
  • Integration Tests
  • Ballerina By Example Tests
• Increased Test Coverage
• Added necessary documentation
  • API documentation
  • Module documentation in Module.md files
  • Ballerina By Examples

[azinneera]

If a user switches to U8 and switches back to an older update, will the older update break?

[gayaldassanayake]

No. But identified an issue where a user switches from U7->U8->U7->U8 will cause to not have any active version for some tools. Will fix that

[gayaldassanayake]

Now with the new commit the changes U7<->U8 are working fine

[codecov]

Codecov Report

Patch coverage: 23.91% and project coverage change: -0.01% ⚠️

Comparison is base (e57a4ab) 76.35% compared to head (0a7c088) 76.35%.
Report is 28 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #41241      +/-   ##
============================================
- Coverage     76.35%   76.35%   -0.01%     
- Complexity    52301    52317      +16     
============================================
  Files          2866     2866              
  Lines        197635   197693      +58     
  Branches      25687    25698      +11     
============================================
+ Hits         150913   150942      +29     
- Misses        38413    38445      +32     
+ Partials       8309     8306       -3     

Files Changed	Coverage Δ
.../src/main/java/io/ballerina/cli/launcher/Main.java	0.00% <0.00%> (ø)
...a/io/ballerina/cli/launcher/util/BalToolsUtil.java	0.00% <0.00%> (ø)
...ina/projects/internal/BalToolsManifestBuilder.java	0.00% <0.00%> (ø)
.../java/io/ballerina/projects/util/ProjectUtils.java	62.79% <33.33%> (-0.25%)	⬇️
...o/ballerina/projects/internal/ManifestBuilder.java	76.32% <51.51%> (+1.26%)	⬆️
...va/io/ballerina/projects/JBallerinaBalaWriter.java	85.21% <66.66%> (+0.26%)	⬆️

... and 9 files with indirect coverage changes

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