logging envelopes path when possible instead of nullable id

[marandaneto]

📢 Type of change

• Bugfix
• New feature
• Enhancement
• Refactoring

📜 Description

logging envelopes path when possible instead of nullable id

💡 Motivation and Context

envelopes that don't have an id would log as null which is not useful at all.

💚 How did you test it?

running it.

📝 Checklist

• I reviewed submitted code
• I added tests to verify changes
• All tests passing

🔮 Next steps

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (master@9ed2c05). Click here to learn what that means.
The diff coverage is 41.17%.

@@            Coverage Diff            @@
##             master     #331   +/-   ##
=========================================
  Coverage          ?   59.07%           
  Complexity        ?      766           
=========================================
  Files             ?       87           
  Lines             ?     3548           
  Branches          ?      344           
=========================================
  Hits              ?     2096           
  Misses            ?     1300           
  Partials          ?      152           

Impacted Files	Coverage Δ	Complexity Δ
...main/java/io/sentry/core/util/CollectionUtils.java	14.28% <14.28%> (ø)	1.00 <1.00> (?)
...c/main/java/io/sentry/core/cache/SessionCache.java	56.17% <25.00%> (ø)	23.00 <0.00> (?)
...n/java/io/sentry/core/transport/HttpTransport.java	67.78% <50.00%> (ø)	19.00 <0.00> (?)
...e/src/main/java/io/sentry/core/EnvelopeSender.java	67.46% <100.00%> (ø)	15.00 <7.00> (?)
...java/io/sentry/core/transport/AsyncConnection.java	66.43% <100.00%> (ø)	13.00 <0.00> (?)
...va/io/sentry/core/SentryEnvelopeHeaderAdapter.java	39.13% <0.00%> (ø)	3.00% <0.00%> (?%)
...ore/src/main/java/io/sentry/core/protocol/Gpu.java	0.00% <0.00%> (ø)	0.00% <0.00%> (?%)
...n/java/io/sentry/core/hints/SessionUpdateHint.java	100.00% <0.00%> (ø)	1.00% <0.00%> (?%)
.../java/io/sentry/core/SentryEnvelopeItemHeader.java	81.81% <0.00%> (ø)	6.00% <0.00%> (?%)
.../src/main/java/io/sentry/core/cache/DiskCache.java	51.42% <0.00%> (ø)	12.00% <0.00%> (?%)
... and 82 more

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